Roadway · Nassau & Suffolk County

North Shore Road (NY Route 25A) Traffic & Accidents

Real-time accident reports, live traffic conditions, and the most comprehensive safety guide to NY Route 25A — Long Island's scenic North Shore corridor from the Queens border through Great Neck, Huntington, Stony Brook, and Port Jefferson. Updated every 4 hours.

Running clear No incidents reported this week · as of Jun 21 View live incidents →
Tracked incidents
13
Length
72 mi
Speed limit
30–40 mph through villages; 45–55 mph on open/divided segments
Daily traffic
25k

Route Overview

From
Queens / Nassau border (Great Neck)
To
NY 25 (Main Road), Calverton (Suffolk County)
Also Known As
Route 25A, Rt 25A, NY-25A, 25A, North Shore Road

Why the North Shore Road (NY Route 25A) Matters

Congestion & Risk

One of Long Island's highest-crash non-limited-access arterials; the village centers at Huntington and Port Jefferson rank among the most congested North Shore bottlenecks in Suffolk County.

History

Route 25A traces portions of the colonial-era North Country Road (the old King's Highway), laid out in the late 1600s to link the North Shore's earliest European settlements. The corridor was assigned the NY 25A designation in the 1920s–30s as New York standardized its touring-route numbers.

About Route 25A

Route 25A — officially the North Shore Road and signed as NY 25A — is Long Island’s scenic, historic counterpart to the high-speed expressways and parkways that carry the bulk of the island’s traffic. Running roughly 72 miles from the Queens / Nassau border at Great Neck east to NY 25 (Main Road) in Calverton, Route 25A is predominantly a two-lane, undivided arterial that threads directly through historic village centers, past harbors and estuaries, and across the rolling Gold Coast terrain that has drawn wealthy estate-builders to the North Shore since the Gilded Age. It carries on the order of 25,000 vehicles per day on its busier village segments — a fraction of the LIE’s volume, but on a road geometry never designed for modern speeds or turning conflicts.

A colonial road, modernized

Route 25A is one of the oldest continuously traveled corridors on Long Island. It traces long portions of the colonial-era North Country Road — part of the old King’s Highway post-road network laid out in the late 1600s to connect the North Shore’s earliest European settlements. As New York standardized its touring-route numbers in the 1920s and 1930s, the North Shore alignment was bundled together and signed as NY 25A, a companion to NY 25 (Jericho Turnpike / Middle Country Road) running parallel to the south. The colonial bones still show: the road bends to follow harbor edges and old village greens rather than the straight, graded geometry of a purpose-built highway.

Route geometry, west to east

From its western end at the Queens / Nassau border near Great Neck, Route 25A runs east through Port Washington, Roslyn (with its landmark clock tower and historic district), and the Glen Cove / Greenvale area before reaching Oyster Bay, home to Theodore Roosevelt’s Sagamore Hill. Crossing into Suffolk County, the road passes the Cold Spring Harbor narrows — the shoulder-less stretch carved into the hillside above the harbor, directly past Cold Spring Harbor Laboratory — and continues through Huntington village, where it briefly overlaps Route 110. East of Huntington it runs through Centerport, Northport, and Fort Salonga (where it is locally known as Fort Salonga Road), then through Smithtown and St. James into Stony Brook village near the SUNY flagship campus and the Nicolls Road corridor. From there it climbs through Setauket, descends into Port Jefferson village (and its Bridgeport ferry terminal), and finishes its run east through Mount Sinai, Miller Place, Shoreham, and Wading River to its terminus at NY 25 in Calverton.

Jurisdiction and patrol

Route 25A is a NYSDOT-maintained state route, but unlike the LIE, no single agency owns its patrol. In Nassau County, the Nassau County Police Department covers the corridor. In Suffolk County, the Suffolk County Police Department patrols through its 2nd, 4th, and 6th Precincts, covering the towns of Huntington, Smithtown, and Brookhaven. Incorporated villages along the route — most notably Northport Village — operate their own police forces with primary jurisdiction inside village limits. NYS Police Troop L assists on unincorporated state-route segments and frequently takes the lead at serious crashes. This patchwork means crash reporting on Route 25A is spread across more agencies than on a limited-access highway.

Speed limits and character

Posted speed limits on Route 25A swing widely. Through the village centers of Huntington, Northport, Stony Brook, and Port Jefferson the limit is typically 30–40 mph, dropping into walkable, shop-lined main streets with crosswalks, on-street parking, and constant turning movements. On the more open or divided stretches between villages the limit rises to 45–55 mph. The corridor’s defining safety problem is this constant transition: drivers move from a fast open segment into a 30 mph village core with little warning, while local traffic turns across the through lanes at unsignalized cross streets. The scenic appeal that makes Route 25A beloved — harbor views, tree canopy, historic streetscapes — is the same geometry that leaves no margin for error.

Dangerous Sections

Route 25A’s crash profile is dominated not by high-speed expressway pileups but by head-on collisions, run-off-road crashes, and turning-movement and pedestrian conflicts on its two-lane village segments. The following stretches are documented hot spots based on NYSDOT crash data and Long Island Traffic’s running corpus of accident reports.

Cold Spring Harbor narrows (Route 25A / Harbor Road area): This two-lane section is carved into the hillside above Cold Spring Harbor with minimal shoulder. Any disabled vehicle creates an immediate secondary-crash risk, the grade and harbor views pull driver attention off the road, and ice accumulates here before it does on flatter sections. The proximity of Cold Spring Harbor Laboratory and waterfront parking adds frequent pedestrian and pull-in/pull-out movements.

Route 110 / Main Street junction (Huntington Village): Where Route 25A overlaps and crosses Route 110 in downtown Huntington, the corridor absorbs one of the North Shore’s busiest commercial-traffic loads. Heavy pedestrian volume, dense on-street parking, and the merge of two major arterials produce frequent low-speed turning and rear-end crashes, and pedestrian conflicts at the village crosswalks.

Nicolls Road intersection (Stony Brook): The junction of Route 25A and Nicolls Road (CR 97) funnels Stony Brook University and medical-center traffic onto the North Shore arterial. The high volume of student and commuter turning movements against 25A through traffic makes this one of the busier signalized conflict points in the corridor’s Suffolk stretch.

Setauket–Port Jefferson grade (Route 25A / Main Street): The descent into Port Jefferson village from the Setauket area includes steep grades that turn hazardous in snow and ice, feeding directly into the village’s narrow, congested center. Summer ferry and downtown traffic compound the risk, stacking vehicles on a grade where stopping distances are already compromised.

Eastern two-lane stretch (Miller Place & Shoreham): Through the Brookhaven communities of Mount Sinai, Miller Place, and Shoreham, Route 25A is a fast, largely unlit two-lane road with limited separation between traffic and vulnerable road users. This segment has seen repeated severe pedestrian and bicycle crashes — including the 2026 death of a 14-year-old Miller Place cyclist — as well as multi-vehicle collisions like the three-vehicle Shoreham crash that left one victim airlifted.

Towns and Communities Along the Route

Route 25A passes through (or borders) the following Long Island towns and hamlets, listed roughly west-to-east:

Each town profile carries its own crash-frequency data, hospital and emergency-services list, and the recent accident archive filtered to that municipality.

Recent Editorial Coverage

Recent Route 25A reporting from the Long Island Traffic data desk:

For the complete Route 25A accident archive, see /accidents/ and filter by road.

Accident Statistics

Route 25A’s crash totals are far lower than the LIE’s by raw volume, but its per-mile injury severity on the two-lane village and rural segments is notable. NYSDOT Motor Vehicle Crash data and NY Open Data crash records indicate the corridor sees on the order of 1,200–1,600 reported crashes annually across its 72-mile length, concentrated in the village centers (Huntington, Northport, Stony Brook, Port Jefferson) and at unsignalized cross-street intersections. Turning-movement and head-on crashes dominate the two-lane sections, while rear-end and pedestrian crashes cluster in the dense village cores. Winter months see a disproportionate share of run-off-road crashes on the hilly, shoulder-less stretches such as the Cold Spring Harbor narrows and the Setauket–Port Jefferson grade, where ice forms early and plowing priority trails the expressways. Night crashes on the unlit eastern segments through Miller Place and Shoreham are over-represented in the severe-injury and fatal categories. These figures are estimates drawn from NYSDOT / NY Open Data crash datasets and should be read as ranges rather than exact annual counts.

For the most current picture of conditions on the road right now, the Live Accident & Traffic Reports section above pulls directly from 511NY and our own ingestion pipeline.

Accidents on North Shore Road (NY Route 25A) Today — Live Reports 131 active

Sunday, June 21: 2 active accidents, 92 construction zones, and 37 closures reported on North Shore Road (NY Route 25A) right now — data from 511NY and police feeds, updated Jun 21, 10:33 PM.

CLOSURE eastbound

roadwork on NY 25A

Gas main repairs and overnight roadwork and repaving and utility work on NY 25A eastbound between New York Avenue; NY 110 (Huntington) and Prime Avenue; Spring Road (Huntington), Sunday June 21st, 2026 thru Friday June 26th, 2026, Sunday/Monday/Tuesday/Wednesday/Thursday, 10:00 PM thru 06:00 AM All

No Data

CLOSURE eastbound

roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between Turkey Lane; Titus Lane (Huntington) and Glen Way (Huntington) All lanes closed until 5:00 A.M.

All lanes closed

CLOSURE eastbound

roadwork on NY 25A

Line striping and utility work on NY 25A eastbound between New York Avenue; NY 110 (Huntington) and Prime Avenue; Spring Road (Huntington), Monday June 15th, 2026 thru Friday June 19th, 2026, Monday/Tuesday/Wednesday/Thursday, 10:00 PM thru 06:00 AM All lanes closed

No Data

CLOSURE eastbound

roadwork on NY 25A

Line striping and utility work on NY 25A eastbound between Poplar Place (Huntington) and Quaker Path; Summit Street (Huntington), Monday June 15th, 2026 thru Friday June 19th, 2026, Monday/Tuesday/Wednesday/Thursday, 10:00 PM thru 06:00 AM All lanes closed

No Data

CLOSURE eastbound

roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between Glen Way (Huntington) and Quaker Path; Summit Street (Huntington) All lanes closed until 5:00 A.M.

All lanes closed

CLOSURE eastbound

roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between Poplar Place (Huntington) and Turkey Lane; Titus Lane (Huntington) All lanes closed 2 way traffic on westbound roadway until 5:00 A.M.

All lanes closed

CLOSURE both directions

accidentsAndIncidents on NY 25A

Police department activity on NY 25A both directions between Thompson Street (Smithtown) and Indian Head Road; CR 14; Church Street (Smithtown) All lanes closed

All lanes closed

CLOSURE eastbound

roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between Shore Road (Huntington) and Turkey Lane; Titus Lane (Huntington) All lanes closed until 5:00 A.M.

All lanes closed

CLOSURE eastbound

roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between Poplar Place (Huntington) and Quaker Path; Summit Street (Huntington) All lanes closed 2 way traffic on westbound roadway until 5:00 A.M.

All lanes closed

CLOSURE eastbound

roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between Turkey Lane; Titus Lane (Huntington) and Glen Way (Huntington) All lanes closed until 5:00 A.M.

All lanes closed

CLOSURE eastbound

roadwork on NY 25A

Utility work on NY 25A eastbound between Turkey Lane; Titus Lane (Huntington) and Quaker Path; Summit Street (Huntington), Monday June 1st, 2026 thru Friday June 5th, 2026, Monday/Tuesday/Wednesday/Thursday, 10:00 PM thru 06:00 AM All lanes closed

No Data

CLOSURE eastbound

roadwork on NY 25A

Traffic signal repairs on NY 25A eastbound at Lake Avenue (Smithtown), Monday June 1st, 2026 thru Friday June 5th, 2026, Monday thru Friday, 10:00 AM thru 03:00 PM All lanes closed

No Data

CLOSURE both directions

roadwork on NY 25A

Line striping and overnight roadwork and repaving on NY 25A both directions between Lawrence Hill Road; NY 108 (Huntington) and NY 25 at West Main Street (Smithtown), Thursday May 28th, 2026 thru Saturday May 30th, 2026, Thursday/Friday/Saturday, 12:00 AM thru 11:59 PM All lanes closed

No Data

CLOSURE eastbound

roadwork on NY 25A

Roadwork and traffic signal repairs and utility work on NY 25A eastbound at Park Avenue; CR 35 (Huntington), Tuesday May 26th, 2026 thru Friday May 29th, 2026, Tuesday/Wednesday/Thursday/Friday, 10:00 AM thru 03:00 PM All lanes closed

No Data

CLOSURE eastbound

roadwork on NY 25A

Gas main repairs and overnight roadwork and repaving and utility work on NY 25A eastbound between Gibson Avenue (Huntington) and Prime Avenue; Spring Road (Huntington), Thursday May 28th, 2026 thru Friday May 29th, 2026, 10:00 PM thru 06:00 AM All lanes closed

No Data

CLOSURE eastbound

roadwork on NY 25A

Gas main repairs and overnight roadwork and repaving and utility work on NY 25A eastbound between Myrtle Avenue; Stewart Avenue (Huntington) and Gibson Avenue (Huntington), Wednesday May 27th, 2026 thru Thursday May 28th, 2026, 10:00 PM thru 06:00 AM All lanes closed

No Data

CLOSURE eastbound

roadwork on NY 25A

Gas main repairs and overnight roadwork and repaving and utility work on NY 25A eastbound between New York Avenue; NY 110 (Huntington) and Gibson Avenue (Huntington), Tuesday May 26th, 2026 thru Wednesday May 27th, 2026, 10:00 PM thru 06:00 AM All lanes closed

No Data

CLOSURE both directions

accidentsAndIncidents on NY 25A

Crash and Downed pole and Downed wires and Power problems on NY 25A both directions between Laurel Hollow Road (Laurel Hollow) and Moores Hill Road (Oyster Bay) All lanes closed (Waiting for PSEG power crews to restore the pole and wires)

All lanes closed

CLOSURE westbound

roadwork on NY 25A

Roadwork, roadwork on NY 25A westbound between Gibson Avenue (Huntington) and Spring Road All lanes closed WB lane closed with EB taking 2-way traffic until 6:00 AM

All lanes closed

CLOSURE both directions

accidentsAndIncidents on NY 25A

Downed tree on NY 25A both directions at Hastings Drive (Smithtown) All lanes closed eastbound; All lanes westbound

All lanes closed

CLOSURE eastbound

roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound at Prime Avenue; Spring Road (Huntington) All lanes closed until 6:00 A.M.

All lanes closed

CLOSURE both directions

roadwork on NY 25A

Overnight roadwork and repaving on NY 25A both directions between Lawrence Hill Road; NY 108 (Huntington) and NY 25 at West Main Street (Smithtown), Wednesday May 13th, 2026 thru Saturday May 16th, 2026, Wednesday/Thursday/Friday, 10:00 PM thru 05:30 AM All lanes closed

No Data

CLOSURE eastbound

roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound at Prospect Street (Huntington) All lanes closed 2 way traffic on westbound roadway until 6:00 A.M.

All lanes closed

CLOSURE both directions

roadwork on NY 25A

Roadwork, roadwork on NY 25A both directions at Prime Avenue; Spring Road (Huntington) All lanes closed until 6:00 A.M.

All lanes closed

CLOSURE both directions

roadwork on NY 25A

Roadwork, roadwork on NY 25A both directions between Prime Avenue; Spring Road (Huntington) and Lawrence Hill Road; Ramp (Huntington) All lanes closed until 7:00 A.M.

All lanes closed

CLOSURE westbound

roadwork on NY 25A

Roadwork and traffic signal repairs on NY 25A westbound at Mankamah Road (Huntington), Monday April 20th, 2026 thru Friday April 24th, 2026, Monday thru Friday, 10:00 AM thru 03:00 PM All lanes closed

No Data

CLOSURE eastbound

roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound at West Neck Road; Woodbury Road (Huntington) All lanes closed until 5am shifting EB traffic to the WB lane

All lanes closed

CLOSURE eastbound

roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between West Neck Road; Woodbury Road (Huntington) and Prime Avenue; Spring Road (Huntington) All lanes closed until 6:00 A.M.

All lanes closed

CLOSURE eastbound

roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound at Prime Avenue; Spring Road (Huntington) All lanes closed until 6am

All lanes closed

CLOSURE eastbound

roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between Gibson Avenue (Huntington) and Prime Avenue; Spring Road (Huntington) All lanes closed until 5:00 A.M.

All lanes closed

CLOSURE eastbound

roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound West Neck Road; Woodbury Road (Huntington) to New York Avenue; NY 110 (Huntington) All lanes closed until 6:00 A.M.

All lanes closed

CLOSURE eastbound

roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between Gibson Avenue (Huntington) and Prime Avenue; Spring Road (Huntington) All lanes closed until 6am eastbound traffic closed and westbound traffic moves 2-way

All lanes closed

CLOSURE eastbound

roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between New York Avenue; NY 110 (Huntington) and Prime Avenue; Spring Road (Huntington) All lanes closed 2 way traffic on westbound roadway until 6:00 A.M.

All lanes closed

CLOSURE eastbound

roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between New York Avenue; NY 110 (Huntington) and Prime Avenue; Spring Road (Huntington) All lanes closed until 6:00 A.M.

All lanes closed

CLOSURE eastbound

roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound at Prime Avenue; Spring Road (Huntington) All lanes closed traffic is moving into the westbound until 6:00 A.M.

All lanes closed

CLOSURE westbound

roadwork on NY 25A

Roadwork, roadwork on NY 25A westbound between West Neck Road; Woodbury Road (Huntington) and Lawrence Hill Road; Ramp (Huntington) All lanes closed 2 way traffic on eastbound roadway until 6:00 A.M.

All lanes closed

CLOSURE eastbound

roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between New York Avenue; NY 110 (Huntington) and Prime Avenue; Spring Road (Huntington) All lanes closed 2 way traffic on westbound roadway until 6:00 A.M.

All lanes closed

ACCIDENT both directions

Downed tree on NY 25A

Downed tree on NY 25A both directions Cedar Swamp Road; NY 107 (Oyster Bay) 1 Right lane of 3 lanes closed

ACCIDENT westbound

Crash on NY 25A

Crash on NY 25A westbound between Cedar Swamp Road; NY 107 (Oyster Bay) and Whitney Lane (Oyster Bay) right shoulder blocked (minor crash between a DOT vehicle & a tour bus, no injuries)

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between Whaling Avenue; Goose Hill Road (Huntington) and Glen Way (Huntington) 1 Right lane of 2 lanes closed until 5:00 A.M.

1 Right lane closed

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between Turkey Lane; Titus Lane (Huntington) and Whaling Avenue; Goose Hill Road (Huntington) 1 Right lane of 2 lanes closed until 5:00 A.M.

1 Right lane closed

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound area of Center Drive; Mineola Avenue (Flower Hill) 1 Left lane of 3 lanes closed Until 3PM

1 Left lane closed

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between Turkey Lane; Titus Lane (Huntington) and Whaling Avenue; Goose Hill Road (Huntington) 1 Left lane of 2 lanes closed until 5:00 A.M.

1 Left lane closed

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between Turkey Lane; Titus Lane (Huntington) and Whaling Avenue; Goose Hill Road (Huntington) 1 Right lane of 2 lanes closed until 5:00 A.M.

1 Right lane closed

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork on NY 25A eastbound between Green Street (Huntington) and Myrtle Avenue; Stewart Avenue (Huntington) 1 Right lane of 2 lanes closed until 6:00 A.M.

1 Right lane closed

CONSTRUCTION eastbound

Guard rail repairs on NY 25A

Guard rail repairs on NY 25A eastbound between Center Drive; Mineola Avenue (Flower Hill) and Mott Avenue (Flower Hill), Monday June 15th, 2026 thru Thursday June 18th, 2026, Monday/Tuesday/Wednesday/Thursday, 10:00 AM thru 03:00 PM 1 Right lane of 2 lanes closed

No Data

CONSTRUCTION both directions

Construction on NY 25A

Construction on NY 25A both directions between 40th Road (New York) Subject to change without notice. Mobile lane closure., Monday June 15th, 2026 thru Thursday June 18th, 2026, Monday/Tuesday/Wednesday/Thursday, 09:00 AM thru 03:00 PM 1 Right lane of 2 lanes closed

No Data

CONSTRUCTION eastbound

Construction on NY 25A

Construction on NY 25A eastbound at 126th Street (New York) Subject to change without notice., Monday June 15th, 2026, 10:00 AM thru 02:00 PM 1 Left lane of 2 lanes closed

No Data

CONSTRUCTION eastbound

Roadwork, Guard rail repairs on NY 25A

Roadwork and guard rail repairs on NY 25A eastbound between Center Drive; Mineola Avenue (Flower Hill) and Mott Avenue (Flower Hill) Not currently Scheduled

No Data

CONSTRUCTION both directions

Overnight roadwork on NY 25A

Overnight roadwork on NY 25A both directions between Lawrence Hill Road; NY 108 (Huntington) and Route 25 (Smithtown) Not currently Scheduled

No Data

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between New Street (Huntington) and New York Avenue; NY 110 (Huntington) 1 Right lane of 2 lanes closed until 6:00 A.M.

1 Right lane closed

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between Poplar Place (Huntington) and Turkey Lane; Titus Lane (Huntington) 1 Right lane of 2 lanes closed until 5:00 A.M.

1 Right lane closed

CONSTRUCTION eastbound

Overnight roadwork, Utility work on NY 25A

Overnight roadwork and utility work on NY 25A eastbound between Turkey Lane; Titus Lane (Huntington) and Quaker Path; Summit Street (Huntington) Not currently Scheduled

No Data

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between Wall Street (Huntington) and New York Avenue; NY 110 (Huntington) 1 Right lane of 2 lanes closed until 6:00 A.M.

1 Right lane closed

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between New York Avenue; NY 110 (Huntington) and Clinton Avenue (Head Of The Harbor) 1 Left lane of 2 lanes closed until 6:00 A.M.

1 Left lane closed

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between POPLAR PL (Huntington) and Glen Way (Huntington) 1 Right lane of 2 lanes closed until 5:00 A.M.

1 Right lane closed

CONSTRUCTION both directions

Roadwork on NY 25A

Roadwork, roadwork on NY 25A both directions between New York Avenue; NY 110 (Huntington) and Wall Street (Huntington) 1 Right lane of 2 lanes closed until 6:00 A.M.

1 Right lane closed

CONSTRUCTION westbound

Construction on NY 25A

Construction on NY 25A westbound ramp to Grand Central Parkway (New York) Subject to change without notice., Tuesday June 9th, 2026, 10:00 AM thru 03:00 PM 1 Right lane of 2 lanes closed

No Data

CONSTRUCTION westbound

Construction on NY 25A

Construction on NY 25A westbound ramp to Grand Central Parkway (New York) Subject to change without notice., Tuesday June 9th, 2026, 10:00 AM thru 03:00 PM 1 Left lane of 2 lanes closed

No Data

CONSTRUCTION eastbound

Construction on NY 25A

Construction on NY 25A eastbound ramp to Grand Central Parkway (New York) Subject to change without notice., Tuesday June 9th, 2026, 10:00 AM thru 03:00 PM left shoulder closed

No Data

CONSTRUCTION eastbound

Construction on NY 25A

Construction on NY 25A eastbound ramp to Whitestone Expressway (New York) Subject to change without notice., Tuesday June 9th, 2026, 10:00 AM thru 03:00 PM 1 Left lane of 2 lanes closed

No Data

CONSTRUCTION westbound

Roadwork, Utility work on NY 25A

Roadwork and utility work on NY 25A westbound between MANOR LN (Riverhead) and NY25A at S JAMESPORT AVE (Riverhead), Monday June 8th, 2026 thru Tuesday June 9th, 2026, Monday/Tuesday, 10:00 AM thru 03:00 PM 1 Left lane of 3 lanes closed

No Data

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between New York Avenue; NY 110 (Huntington) and Myrtle Avenue; Stewart Avenue (Huntington) 1 Right lane of 2 lanes closed until 6:00 A.M.

1 Right lane closed

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between Clark Street (Thomaston) and West Street (North Hempstead) 1 Right lane of 2 lanes closed until 6:30 A.M.

1 Right lane closed

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork on NY 25A eastbound between East Shore Road; Ramp (North Hempstead) and West Street (North Hempstead) right shoulder blocked until 6:30 A.M.

right shoulder blocked

CONSTRUCTION eastbound

Overnight roadwork on NY 25A

Overnight roadwork on NY 25A eastbound between Clark Drive (Thomaston) and West Drive (North Hempstead), Sunday June 7th, 2026 thru Sunday June 14th, 2026, Sunday thru Saturday, 09:00 PM thru 06:00 AM 1 Left lane of 2 lanes closed

No Data

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between New York Avenue; NY 110 (Huntington) and Myrtle Avenue; Stewart Avenue (Huntington) 1 Right lane of 2 lanes closed until 6:00 A.M.

1 Right lane closed

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between Glen Way (Huntington) and Quaker Path; Summit Street (Huntington) 1 Right lane of 2 lanes closed until 5:00 A.M.

1 Right lane closed

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between Whaling Avenue; Goose Hill Road (Huntington) and Quaker Path; Summit Street (Huntington) 1 Right lane of 2 lanes closed until 5:00 A.M.

1 Right lane closed

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between New York Avenue; NY 110 (Huntington) and Myrtle Avenue; Stewart Avenue (Huntington) 1 Right lane of 2 lanes closed until 6:00 A.M.

1 Right lane closed

CONSTRUCTION westbound

Construction on NY 25A

Construction on NY 25A westbound ramp to Grand Central Parkway (New York) Subject to change without notice., Thursday June 4th,2026 thru Friday June 5th,2026, Thursday/Friday, 10:00 AM thru 03:00 PM 1 Right lane of 3 lanes closed ,

No Data

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between Turkey Lane; Titus Lane (Huntington) and Quaker Path; Summit Street (Huntington) 1 Right lane of 2 lanes closed until 5:30 A.M.

1 Right lane closed

CONSTRUCTION eastbound

Guard rail repairs on NY 25A

Guard rail repairs on NY 25A eastbound between Center Drive; Mineola Avenue (Flower Hill) and Mott Avenue (Flower Hill), Tuesday June 2nd, 2026 thru Wednesday June 3rd, 2026, Tuesday/Wednesday, 10:00 AM thru 03:00 PM 1 Right lane of 2 lanes closed

No Data

CONSTRUCTION both directions

Line striping on NY 25A

Line striping on NY 25A both directions between Lawrence Hill Road; NY 108 (Huntington) and NY 25 at West Main Street (Smithtown), Wednesday June 3rd, 2026 thru Saturday June 6th, 2026, Wednesday/Thursday/Friday, 10:00 PM thru 05:30 AM 1 Right lane of 2 lanes closed eastbound; All lanes closed westb

No Data

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between New York Avenue; NY 110 (Huntington) and Myrtle Avenue; Stewart Avenue (Huntington) 1 Left lane of 2 lanes closed until 6:00 A.M.

1 Left lane closed

CONSTRUCTION westbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A westbound between Poplar Place (Upper Brookville) and Portland Place (North Hempstead) 1 Left lane of 2 lanes closed until 5:00 A.M.

1 Left lane closed

CONSTRUCTION both directions

Roadwork on NY 25A

Roadwork, roadwork on NY 25A both directions between Gibson Avenue (Huntington) and Myrtle Avenue; Stewart Avenue (Huntington) 1 Right lane of 2 lanes closed westbound; 1 Left lane of 2 lanes closed eastbound until 6:00 A.M.

1 Right lane closed

CONSTRUCTION westbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A westbound between Moores Hill Road (Oyster Bay) and Laurel Hollow Road (Laurel Hollow) 1 Right lane and shoulder of 2 lanes closed until 6:00 A.M.

1 Right lane and shoulder closed

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound at Park Avenue; CR 35 (Huntington) right shoulder blocked until 2:00 P.M.

right shoulder blocked

CONSTRUCTION westbound

Milling, Overnight roadwork, Repaving, Line striping on NY 25A

Line striping and milling and overnight roadwork and repaving on NY 25A westbound between Moores Hill Road (Oyster Bay) and Cold Spring Road (Oyster Bay), Tuesday May 26th, 2026 thru Thursday May 28th, 2026, Tuesday/Wednesday, 10:00 PM thru 06:00 AM 1 Right lane of 2 lanes closed

No Data

CONSTRUCTION westbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A westbound between Lawrence Hill Road; NY 108 (Huntington) and Laurel Hollow Road (Laurel Hollow) 1 Right lane of 2 lanes closed until 6:00 A.M.

1 Right lane closed

CONSTRUCTION westbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A westbound at Americana at Manhasset (The Mall) (Munsey Park) 2 lanes of 3 lanes closed until 3:00 P.M.

2 lanes closed

CONSTRUCTION both directions

Construction on NY 25A

Construction on NY 25A both directions between 40th Road (New York) Subject to change without notice., Tuesday May 26th, 2026 thru Friday May 29th, 2026, Tuesday/Wednesday/Thursday/Friday, 09:00 AM thru 03:00 PM 1 Right lane of 2 lanes closed

No Data

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound at Prime Avenue; Spring Road (Huntington) 1 Right lane of 3 lanes closed until 6:00 A.M.

1 Right lane closed

CONSTRUCTION both directions

Roadwork on NY 25A

Roadwork, roadwork on NY 25A both directions at Prime Avenue; Spring Road (Huntington) 1 Left lane of 2 lanes closed until 6:00 A.M.

1 Left lane closed

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between Rumford Road; Monroe Street (Smithtown) and NY 25 at West Main Street (Smithtown) 1 Right lane of 2 lanes closed until 2:00 A.M.

1 Right lane closed

CONSTRUCTION westbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A westbound at West Neck Road; Woodbury Road (Huntington) 1 Right lane of 2 lanes closed until 7:00 A.M.

1 Right lane closed

CONSTRUCTION both directions

Construction on NY 25A

Construction, construction on NY 25A both directions at Grand Central Parkway (New York) 1 Right lane of 3 lanes closed alternating lane closures until 5:00 A.M.

1 Right lane closed

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between Woodhull Road; Randou Drive (Huntington) and GREENLAWN RD (Huntington) 1 Right lane of 2 lanes closed until 5:00 A.M.

1 Right lane closed

CONSTRUCTION westbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A westbound at Beach Street; Brook Road (Port Jefferson) right shoulder blocked until 3:00 P.M.

right shoulder blocked

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound at West Neck Road; Woodbury Road (Huntington) 1 Right lane of 2 lanes closed until 6:00 A.M.

1 Right lane closed

CONSTRUCTION eastbound

Construction on NY 25A

Construction on NY 25A eastbound at Shea Stadium; Ramp (New York) Subject to change without notice., Tuesday May 5th, 2026, 10:00 AM thru 12:00 PM 1 Left lane of 2 lanes closed

No Data

CONSTRUCTION both directions

Roadwork on NY 25A

Roadwork, roadwork on NY 25A both directions at West Neck Road; Woodbury Road (Huntington) 1 Left lane of 2 lanes closed until 3:00 A.M.

1 Left lane closed

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between Beach Street; Brook Road (Port Jefferson) right shoulder closed Until 3 PM

right shoulder closed

CONSTRUCTION eastbound

Overnight roadwork, Drainage improvements on NY 25A

Drainage improvements and overnight roadwork on NY 25A eastbound between FORT HILL RD (Huntington) and GREENLAWN RD (Huntington), Monday April 27th, 2026 thru Friday May 1st, 2026, Monday/Tuesday/Wednesday/Thursday, 10:00 PM thru 05:00 AM 1 Left lane of 2 lanes closed

No Data

CONSTRUCTION both directions

Overnight roadwork on NY 25A

Overnight roadwork on NY 25A both directions between Lawrence Hill Road; NY 108 (Huntington) and NY 25 at West Main Street (Smithtown), Wednesday April 29th, 2026 thru Friday May 1st, 2026, Wednesday/Thursday, 10:00 PM thru 05:30 AM 1 Left lane of 3 lanes closed

No Data

CONSTRUCTION westbound

Roadwork, Traffic signal repairs on NY 25A

Roadwork and traffic signal repairs on NY 25A westbound at MAKAMAH RD (Huntington), Monday April 27th, 2026 thru Friday May 1st, 2026, Monday thru Friday, 10:00 AM thru 03:00 PM 1 Right lane of 3 lanes closed

No Data

CONSTRUCTION eastbound

Overnight roadwork, Utility work on NY 25A

Overnight roadwork and utility work on NY 25A eastbound between HILLSIDE AVE (Huntington) and Prospect Street (Huntington), Sunday May 3rd, 2026 thru Thursday May 7th, 2026, Sunday/Monday/Tuesday/Wednesday, 10:00 PM thru 06:00 AM 1 Right lane of 2 lanes closed

No Data

CONSTRUCTION eastbound

Construction on NY 25A

Construction on NY 25A eastbound at Shea Stadium; Ramp (New York) Subject to change without notice., Friday May 1st, 2026, 10:00 AM thru 12:00 PM 1 Left lane of 2 lanes closed

No Data

CONSTRUCTION both directions

Roadwork on NY 25A

Roadwork, roadwork on NY 25A both directions at West Neck Road; Woodbury Road (Huntington) 1 Left lane of 2 lanes closed until 6:00 A.M.

1 Left lane closed

CONSTRUCTION eastbound

Construction on NY 25A

Construction, construction on NY 25A eastbound between Grand Central Parkway (New York) and Seaver Way (New York) 1 Right lane of 2 lanes closed until 2:00 P.M.

1 Right lane closed

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between Turkey Lane; Titus Lane (Huntington) and Quaker Path; Summit Street (Huntington) right shoulder blocked until 3:00 P.M.

right shoulder blocked

CONSTRUCTION eastbound

Utility work, Overnight roadwork on NY 25A

Overnight roadwork and utility work on NY 25A eastbound between Hillside Ave (Huntington) and Prime Avenue; Spring Road (Huntington), Monday April 20th, 2026 thru Thursday April 23rd, 2026, Monday/Tuesday/Wednesday, 10:00 PM thru 06:00 AM 1 Right lane of 2 lanes closed

No Data

CONSTRUCTION westbound

Traffic signal repairs, Roadwork on NY 25A

Roadwork and traffic signal repairs on NY 25A westbound at Beach Street; Brook Road (Port Jefferson), Monday April 20th, 2026 thru Friday April 24th, 2026, Monday thru Friday, 10:00 AM thru 03:00 PM 1 Right lane of 2 lanes closed

No Data

CONSTRUCTION eastbound

Construction on NY 25A

Construction on NY 25A eastbound at Boat Basin Place (New York) Subject to change without notice., Tuesday April 21st, 2026, 10:00 AM thru 03:00 PM 1 Right lane of 2 lanes closed

No Data

CONSTRUCTION both directions

Street sweeping on NY 25A

Street sweeping on NY 25A both directions from Grand Central Parkway (New York) to I-678 at Exit 17 - Whitestone Expressway; 3rd Avenue (New York) Subject to change without notice., Monday April 20th, 2026, 10:00 AM thru 03:00 PM 1 Right lane of 2 lanes closed

No Data

CONSTRUCTION eastbound

Construction on NY 25A

Construction, construction on NY 25A eastbound at Boat Basin Pl (New York) 1 Left lane of 2 lanes closed until 2:00 P.M.

1 Left lane closed

CONSTRUCTION both directions

Overnight roadwork on NY 25A

Overnight roadwork on NY 25A both directions between NY 347 (Brookhaven) and ADIRONDACK DR at ADIRONDACK DR (Brookhaven), Tuesday April 14th, 2026 thru Wednesday April 15th, 2026, 10:00 PM thru 05:00 AM 1 Left lane of 3 lanes closed

No Data

CONSTRUCTION westbound

Roadwork, Traffic signal repairs on NY 25A

Roadwork and traffic signal repairs on NY 25A westbound at Beach Street; Brook Road (Port Jefferson), Monday April 13th, 2026 thru Friday April 17th, 2026, Monday thru Friday, 10:00 AM thru 03:00 PM 1 Left lane of 2 lanes closed

No Data

CONSTRUCTION westbound

Roadwork, Traffic signal repairs on NY 25A

Roadwork and traffic signal repairs on NY 25A westbound at MAKAMAH RD (Huntington), Monday April 13th, 2026 thru Friday April 17th, 2026, Monday thru Friday, 10:00 AM thru 03:00 PM 1 Left lane of 3 lanes closed

No Data

CONSTRUCTION eastbound

Overnight roadwork, Utility work on NY 25A

Overnight roadwork and utility work on NY 25A eastbound between Hillside Ave (Huntington) and Prime Avenue; Spring Road (Huntington), Sunday April 12th, 2026 thru Thursday April 16th, 2026, Sunday/Monday/Tuesday/Wednesday, 10:00 PM thru 06:00 AM 1 Left lane of 3 lanes closed

No Data

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between Irwin Place (Huntington) and Prime Avenue; Spring Road (Huntington) 1 Right lane of 2 lanes closed until 6:00 A.M.

1 Right lane closed

CONSTRUCTION both directions

Roadwork on NY 25A

Roadwork, roadwork on NY 25A both directions at Scudder Place (Huntington) 1 Right lane of 2 lanes closed until 5:00 A.M.

1 Right lane closed

CONSTRUCTION eastbound

Construction on NY 25A

Construction on NY 25A eastbound at Shea Stadium; Ramp (New York) Subject to change without notice., Wednesday April 15th, 2026, 09:00 AM thru 03:00 PM 1 Left lane of 2 lanes closed

No Data

CONSTRUCTION both directions

Construction on NY 25A

Construction on NY 25A both directions at I-678 (New York), Thursday April 16th, 2026 thru Friday April 17th, 2026, 09:00 PM thru 03:00 AM 1 Left lane of 3 lanes closed

No Data

CONSTRUCTION eastbound

Construction on NY 25A

Construction on NY 25A eastbound between 40th Road (New York), Tuesday April 14th, 2026, 09:00 AM thru 03:00 PM 1 Right lane of 2 lanes closed

No Data

CONSTRUCTION westbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A westbound at Rinaldo Road; Norwood Road (Huntington) right shoulder blocked until 3:00 P.M.

right shoulder blocked

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound Prime Avenue; Spring Road (Huntington) 1 Right lane of 3 lanes closed until 5:00 A.M.

1 Right lane closed

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound at New Street (Huntington) 1 Right lane of 2 lanes closed until 6:00 A.M.

1 Right lane closed

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound between New Street (Huntington) and Gibson Avenue (Huntington) 1 Right lane of 2 lanes closed until 6:00 A.M.

1 Right lane closed

CONSTRUCTION eastbound

Roadwork on NY 25A

Roadwork, roadwork on NY 25A eastbound at Ridge Road (Brookhaven) right shoulder blocked until 3:00 P.M.

right shoulder blocked

CONSTRUCTION both directions

Repaving on NY 25A

Repaving on NY 25A both directions between Rinaldo Road; Norwood Road (Huntington) and Greenknoll Ct (Huntington), Wednesday April 1st, 2026 thru Thursday April 2nd, 2026, 10:00 PM thru 05:30 AM 1 Right lane of 2 lanes closed

No Data

CONSTRUCTION both directions

Construction on NY 25A

Construction on NY 25A both directions at I-678 (New York), Wednesday April 1st, 2026, 09:00 AM thru 03:00 PM 1 Left lane of 3 lanes closed

No Data

CONSTRUCTION both directions

Construction on NY 25A

Construction on NY 25A both directions at 68TH ST (New York), Wednesday April 1st, 2026, 09:00 AM thru 03:00 PM 1 Left lane of 2 lanes closed

No Data

CONSTRUCTION both directions

Roadwork on NY 25A

Roadwork on NY 25A both directions at Lawrence Hill Road; NY 108 (Huntington) All lanes open one lane closed until 3:00 A.M.

All lanes open

CONSTRUCTION both directions

Roadwork on NY 25A

Roadwork, roadwork on NY 25A both directions at West Neck Road; Woodbury Road (Huntington) 1 Left lane of 2 lanes closed eastbound; 1 Right lane of 2 lanes closed westbound until 6:00 A.M.

1 Left lane closed

CONSTRUCTION both directions

Roadwork, Traffic signal repairs, Drainage improvements on NY 25A

Drainage improvements and roadwork and traffic signal repairs on NY 25A both directions between Parker Road (Riverhead) and NY 25 at Splish Splash (Riverhead), Monday March 23rd, 2026 thru Friday March 27th, 2026, Monday thru Friday, 09:00 AM thru 04:00 PM 1 Left lane of 2 lanes closed

No Data

CONSTRUCTION eastbound

Roadwork, Overhead sign repair on NY 25A

Overhead sign repair and roadwork on NY 25A eastbound between West Shore Road (North Hempstead) and Bryant Avenue (North Hempstead), Monday March 23rd, 2026 thru Friday March 27th, 2026, Monday thru Friday, 10:00 AM thru 03:00 PM 1 Left lane of 2 lanes closed

No Data

CONSTRUCTION westbound

Roadwork on NY 25A

Roadwork on NY 25A westbound at ST. FRANCIS DEMATTEIS CENTER (Brookville), Monday March 23rd, 2026 thru Friday March 27th, 2026, Monday thru Friday, 10:00 AM thru 03:00 PM 1 Left lane of 3 lanes closed

No Data

CONSTRUCTION westbound

Roadwork, Utility work, Traffic signal repairs on NY 25A

Roadwork and traffic signal repairs and utility work on NY 25A westbound at MAKAMAH RD (Huntington), Monday March 23rd, 2026 thru Friday March 27th, 2026, Monday thru Friday, 10:00 AM thru 03:00 PM 1 Left lane of 3 lanes closed

No Data

CONSTRUCTION eastbound

Overnight roadwork, Utility work on NY 25A

Overnight roadwork and utility work on NY 25A eastbound between HILLSIDE AVE (Huntington) and Prime Avenue; Spring Road (Huntington), Sunday March 22nd, 2026 thru Thursday March 26th, 2026, Sunday/Monday/Tuesday/Wednesday, 10:00 PM thru 06:00 AM 1 Left lane of 2 lanes closed

No Data

Data from 511NY, updated Jun 21, 10:33 PM

Latest on North Shore Road (NY Route 25A) 13 total

minor

Downed Tree Blocks Right Lane on NY 25A in Nassau County

Oyster Bay · Jun 7, 2026

Jun 7, 1:12 AM
major

Flushing Man Critically Injured in 3-Vehicle Chain Reaction Crash on Route 25A

· May 9, 2026

May 9, 9:02 PM
moderate

Three-Vehicle Crash on Route 25A in Shoreham Leaves One Airlifted

· May 9, 2026

May 9, 7:59 PM
critical

Miller Place Boy, 14, Dies Weeks After Route 25A Bicycle Crash

Miller Place · May 1, 2026

May 1, 1:34 PM
major

DWI Crash: Duo Freed From Wreckage Wrapped Around Tree In Mt. Sinai; Woman Seriously Injured

· Apr 11, 2026

Apr 11, 7:36 PM
moderate

Pizza event raises $6,500 for Miller Place teen hurt in Route 25A accident

Miller Place · Mar 30, 2026

Mar 30, 9:33 PM
major

Tribute grows at Miller Place Duck Pond for teen hospitalized in crash

Miller Place · Mar 26, 2026

Mar 26, 4:20 PM
major

Community rallies behind Miller Place teen critically injured in Route 25A crash

Miller Place · Mar 25, 2026

Mar 25, 9:40 PM
View all 13 incidents on North Shore Road (NY Route 25A) →

Accidents by Town

Town-specific breakouts for North Shore Road (NY Route 25A) — every town where we've tracked three or more incidents.

View all 8 accidents on North Shore Road (NY Route 25A) in Miller Place Open page →

Accident Statistics

13 Total Reports
1 Critical
0 Fatal

Dangerous Sections

  • Cold Spring Harbor narrows (Route 25A / Harbor Road)
  • Route 25A / Route 110 (Huntington Village)
  • Route 25A / Nicolls Road (Stony Brook)
  • Setauket–Port Jefferson grade (Route 25A / Main Street)
  • Route 25A through Miller Place & Shoreham

Towns Along This Route

Frequently Asked Questions

Is there traffic on the North Shore Road (NY Route 25A) right now?

Right now there are 2 active accidents, 92 construction zones, and 37 closures reported on the North Shore Road (NY Route 25A). This page shows live North Shore Road (NY Route 25A) conditions and refreshes through the day — see the live incidents above for exact locations.

What happened on the North Shore Road (NY Route 25A) today?

No new North Shore Road (NY Route 25A) accidents have been reported in the past 24 hours. This page logs every tracked North Shore Road (NY Route 25A) incident and updates through the day — see recent incidents above for the latest.

What happened on Route 25A today?

Check the Live Accident & Traffic Reports section above for the latest Route 25A incidents. Long Island Traffic ingests data from 511NY, NYS Police Troop L, NCPD, SCPD, the National Weather Service, and verified social media every 15 minutes; static-page coverage rebuilds every 4 hours. For the most recent 30-minute window, 511ny.org is the upstream source.

How long is Route 25A and where does it go?

NY Route 25A runs roughly 72 miles along Long Island's North Shore. It begins at the Queens / Nassau border near Great Neck, threads east through Port Washington, Roslyn, Glen Cove, and Oyster Bay in Nassau County, then crosses into Suffolk County through Cold Spring Harbor, Huntington, Centerport, Northport, Smithtown, Stony Brook, Setauket, and Port Jefferson before ending at NY 25 (Main Road) in Calverton.

What are the most dangerous sections of Route 25A?

Based on Long Island Traffic's ongoing crash analysis, the highest-risk segments include the Cold Spring Harbor narrows (a shoulder-less two-lane stretch carved above the harbor), the Route 110 / Main Street junction in Huntington Village, the Nicolls Road intersection near Stony Brook, the steep Setauket descent into Port Jefferson, and the eastern two-lane stretch through Miller Place and Shoreham, where pedestrian and bicycle crashes have proven especially severe.

Is Route 25A the same as Northern Boulevard?

No — they are treated as separate corridors on this site. The western, heavily commercial Nassau County designation of NY 25A is signed as Northern Boulevard and has its own page. Route 25A as covered here is the scenic North Shore corridor east of that commercial stretch — the two-lane, village-centered, Gold Coast route running from the Great Neck / Port Washington area east through Oyster Bay, Huntington, and Suffolk's North Shore to Calverton.

What is the speed limit on Route 25A?

The posted limit varies by segment. Through village centers — Huntington, Northport, Stony Brook, Port Jefferson — it is typically 30–40 mph. On the more open or divided stretches between villages it rises to 45–55 mph. The frequent transitions between low-speed village zones and faster open segments, combined with turning movements at unsignalized cross streets, are a recurring crash factor.

Who patrols Route 25A?

Route 25A is a New York State route maintained by NYSDOT, but day-to-day patrol is split among local agencies. The Nassau County Police Department covers the Nassau segments; the Suffolk County Police Department (2nd, 4th, and 6th Precincts) covers Huntington, Smithtown, and Brookhaven; incorporated villages such as Northport run their own police forces; and NYS Police Troop L assists on unincorporated state-route segments and at major crashes.

Is Route 25A a scenic byway?

Yes. Significant portions of Route 25A are recognized for their scenic and historic character along Long Island's Gold Coast. The road passes through or near Cold Spring Harbor, Lloyd Harbor, Centerport, Northport, Stony Brook village, and the Setauket–Port Jefferson area, with frequent views of Long Island Sound and the North Shore's harbors and estuaries.

Does Route 25A go to Port Jefferson?

Yes. Route 25A reaches Port Jefferson village, where the Port Jefferson–Bridgeport ferry crosses Long Island Sound to Connecticut. The approach from the west through the Setauket area involves a significant hill grade that can be hazardous in snow and ice, and summer ferry and downtown traffic adds heavy congestion to the village center.

Why are there so many bicycle and pedestrian crashes on Route 25A?

Long stretches of Route 25A are two-lane and shoulder-less, run directly through walkable village centers, and carry a mix of through traffic, local turning movements, cyclists, and pedestrians. The eastern Brookhaven segment through Miller Place and Shoreham has been the site of multiple severe pedestrian and bicycle crashes, including the 2026 death of a 14-year-old Miller Place cyclist. Speed differentials and limited separation make these conflicts disproportionately deadly.

Why is Route 25A more dangerous in winter?

The North Shore's hilly terrain means grades like the Cold Spring Harbor narrows and the Setauket–Port Jefferson descent ice over before flatter roads do. As a secondary arterial rather than an expressway, Route 25A also receives lower plowing and salting priority than the LIE or the parkways, and many rural stretches are unlit — removing the visual margin that catches driver error before it becomes a run-off-road or head-on crash.

Injured in a North Shore Road (NY Route 25A) Accident?

Sources