North Shore Road (Route 25A) (NY 25A) — Accident History & Road Conditions

Traffic conditions, accident reports, and safety information for Route 25A — Long Island's scenic North Shore coastal route from Queens through Great Neck, Oyster Bay, Huntington, and Port Jefferson.

2 incidents tracked — last incident Mar 30, 2026

Length 72 mi
Speed Limit 30-40 mph
Avg Daily Traffic 25,000
Counties Nassau, Suffolk

Route Overview

From
Queens border
To
Calverton (Suffolk)
Also Known As
Route 25A, NY-25A, North Shore Road

Overview

Route 25A — officially the North Shore Road — is Long Island’s most scenic highway, running 72 miles from the Nassau/Queens border through the coastal communities of the North Shore to Calverton in eastern Suffolk County. Unlike the high-speed expressways and parkways that dominate Long Island’s highway network, Route 25A is predominantly a two-lane undivided road passing through historic village centers, past harbors and bays, and through the rolling North Shore landscape that has attracted wealthy residents since the Gilded Age.

The road follows the historical northern spine of Long Island, connecting communities that were among the island’s earliest European settlements. Great Neck, Oyster Bay (home of Theodore Roosevelt’s Sagamore Hill), Cold Spring Harbor, Huntington, Northport, Stony Brook (site of one of the State University of New York’s flagship campuses), and Port Jefferson are all on or directly accessible from Route 25A, giving the road a historic and cultural density that few Long Island roads can match.

Cold Spring Harbor deserves particular mention: the stretch of Route 25A hugging the western shore of Cold Spring Harbor is one of the most photographically striking sections of any Long Island road, with the road carved into the hillside above the harbor with almost no shoulder width. The Cold Spring Harbor Laboratory — where James Watson and Francis Crick’s DNA research was extended and where multiple Nobel Prize winners have worked — is located directly on Route 25A.

The road’s scenic character comes with safety trade-offs. Two-lane sections through villages have no room for error, and the speed differential between through traffic and local turning movements creates frequent conflicts. The North Shore’s hilly terrain, combined with winter ice and limited plowing priority compared to expressways, makes Route 25A particularly hazardous in cold weather.

Dangerous Sections

Cold Spring Harbor narrow section (Nassau/Suffolk border): 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 the harbor views distract drivers. Ice accumulates here before it does on flatter road sections.

Oyster Bay village approach: The approach to Oyster Bay from the west involves a significant grade change and a sharp curve near the village center. The historical road alignment was not designed for modern traffic volumes.

Port Jefferson village approach (Setauket / Port Jefferson): The descent into Port Jefferson from the Setauket area includes steep grades that are hazardous in snow and ice, and the village center’s narrow streets and ferry traffic create significant congestion during summer months.

Towns Along This Route

Current Conditions

Check back for real-time conditions.

Recent Incidents

No recent incidents to display.

Accident Statistics

Route 25A crash data show the two-lane sections consistently outperforming the divided sections in per-mile crash rates. Winter months see a disproportionate share of run-off-road and head-on crashes on the narrow sections, particularly after snow and ice events. Head-on collisions and off-road excursions dominate the crash profile on two-lane rural stretches, with cyclist and equestrian incidents adding to the safety picture on certain sections near Cold Spring Harbor and Oyster Bay. Night crashes on the unlit rural sections are disproportionately severe, as the absence of street lighting removes the visual margin that catches driver errors before they become crashes.

Current Conditions 62 active

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 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 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 May 6, 8:01 AM

Recent Incidents 2 total

moderate

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

Miller Place · Mar 30, 2026

36d ago
major

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

Miller Place · Mar 25, 2026

41d ago

Accident Statistics

2 Total Reports
0 Critical
0 Fatal

Towns Along This Route

Safety Resources

Frequently Asked Questions

How many accidents happen on Route 25A each year?

Route 25A records approximately 1,200–1,600 crashes annually across its 72-mile length in Nassau and Suffolk County. The road's two-lane sections through North Shore communities see the highest crash rates, particularly at intersections with major cross streets and at the numerous railroad grade crossings.

What are the most dangerous sections of Route 25A?

The most dangerous sections of Route 25A include the Port Washington spur area in Nassau County, the Oyster Bay village approach, the stretch through Cold Spring Harbor (with its narrow two-lane section hugging the harbor), and the approaches to Port Jefferson village in Suffolk County. Head-on crashes and turning movements at unsignalized intersections are the dominant crash types on the two-lane sections.

Is Route 25A a scenic route?

Yes. Route 25A is designated a New York State Scenic Byway through significant portions of its length on the North Shore. The road passes through or near Cold Spring Harbor, Lloyd Neck, Lloyd Harbor, Centerport, Northport, Stony Brook village, and the Crane Neck area — all offering views of Long Island Sound and the estuaries and harbors of the North Shore.

Does Route 25A go to Port Jefferson?

Yes. Route 25A passes through Port Jefferson village in Suffolk County, where the Cross Sound Ferry connects to Bridgeport, Connecticut. The approach to Port Jefferson from the west (through the Setauket area) involves a significant hill grade that can be hazardous in icy winter conditions.

Is Route 25A the same as Northern Boulevard?

The western section of Route 25A in Nassau County is known as Northern Boulevard before becoming Route 25A proper. Northern Boulevard is treated as a separate page on this site due to its distinct character as a Nassau County arterial. Route 25A proper runs east from the Great Neck / Port Washington area through Oyster Bay and into Suffolk County.