Route 110 Widening Between Farmingdale and Huntington: Construction Guide

What’s Happening

Route 110 — the major north-south corridor connecting Farmingdale, Melville, Huntington Station, and Huntington Village — is undergoing a long-planned set of improvements intended to reduce chronic congestion and improve pedestrian safety along one of Long Island’s busiest commercial spines. The work includes widening select intersections to add dedicated turn lanes, upgrading traffic signals with modern detection and adaptive timing, rebuilding curb cuts and crosswalks to meet current ADA standards, and repaving segments where the surface has degraded.

The corridor carries heavy commuter traffic into the Huntington Station LIRR area in the morning and equally heavy reverse-commute traffic into the office and retail clusters around Melville and Farmingdale. It is also a core retail spine, with major shopping centers, big-box stores, and a dense mix of small businesses lining nearly every block. That combination makes Route 110 a difficult corridor to work on: there is essentially no off-peak window, and every intersection improvement has to be sequenced around existing driveway access.

NYSDOT’s approach is to work one intersection at a time in a rolling sequence, minimizing the number of simultaneous construction zones while accepting that the overall project will take several seasons to complete.

Timeline

The active intersection upgrades are scheduled throughout 2026, with the most disruptive milling and widening work concentrated in the warmer months. Signal upgrades and striping continue into the fall. Full corridor completion is expected to extend into 2027 as crews cycle through the remaining intersections.

Night and weekend work is used aggressively on Route 110 to reduce daytime impact, but the corridor’s commercial nature means some lane occupancies during business hours are unavoidable — particularly when utility relocations or foundation work for new signal poles require daylight visibility.

Impact on Drivers

Expect tight lanes through active intersection work zones, especially at the larger junctions with Conklin Street, Broadhollow Road interchanges, and the Route 25 (Jericho Turnpike) crossing. Left-turn lanes may be temporarily closed, forcing drivers to use U-turns at the next signal or continue to an alternate cross street.

Rush-hour delays of 10–20 minutes through the corridor are realistic during active intersection construction. Southbound evening traffic exiting the office parks is the worst flow, followed by northbound morning traffic into Huntington Station. Midday and Sunday traffic moves reasonably well even during active phases.

Access to businesses is being maintained throughout construction, but driveways closest to work zones may be temporarily inaccessible — NYSDOT and the contractor coordinate these closures with property owners and post signage typically 48 hours in advance.

Alternative Routes

For through traffic between Farmingdale and Huntington that does not need to stop along Route 110, two alternates work well. The first is Broadhollow Road, which runs mostly parallel and picks up at Ruland Road in Melville — this is a direct alternate for northbound traffic. The second is Bagatelle Road / Pinelawn Road, farther east, which provides a north-south bypass with fewer signals and lower speeds but also far less congestion.

Drivers heading to the Huntington Station LIRR should consider New York Avenue (the continuation of Route 110 north of Route 25A) approached from the north via Main Street (Route 25A) rather than fighting traffic northbound through the village.

For east-west traffic crossing Route 110 as a means of traversing Long Island, the LIE (I-495) to the south and the Northern State Parkway to the north both bypass the corridor entirely and are usually the right call during commercial-hour construction.

Safety Notes

Route 110 construction introduces unusual hazards for a corridor drivers think they know. Temporary striping often does not match the underlying road geometry, and it is easy to drift into a turn lane that no longer goes where it used to. Follow the orange cones and temporary striping even when they contradict your muscle memory.

Watch for pedestrians throughout the work zone. The corridor has heavy foot traffic, and temporary sidewalk closures force pedestrians into unexpected places — sometimes into the roadway itself during gap periods. Slow down, scan both sides at every signal, and do not block crosswalks.

Large construction vehicles routinely enter and exit the travel lanes at low speed. Give them room, keep your following distance generous, and do not cut back in front of a truck that has just pulled over for you. Finally, obey doubled work-zone fines and reduced speeds — enforcement on Route 110 during construction is visible and regular.

Why This Matters

Route 110 is one of the most important north-south commercial and commuter corridors on Long Island, and the cumulative deferred maintenance on its intersections has been a drag on both safety and throughput for years. Modernized signals with adaptive timing can reduce delay across the corridor significantly — not by moving drivers through individual intersections faster, but by coordinating arrivals so fewer drivers hit red lights in the first place. That is a bigger efficiency gain than most drivers realize.

Pedestrian safety improvements matter just as much. Route 110 runs through dense retail and office areas where pedestrians cross constantly, often in marginal light or weather. ADA-compliant ramps and proper pedestrian signals reduce the probability of a serious pedestrian crash, which is both a human-safety issue and a liability for drivers who may otherwise misjudge a marginal situation.

What to Watch For

As each intersection finishes, drivers should notice longer turn-lane storage, smoother pavement transitions, and new signal hardware on the corners. 511NY and Suffolk County DPW notices flag upcoming closures several days in advance where possible. Variable message signs along the corridor update in real time when a planned closure shifts, so pay attention to them — they are the best source of truth during an active work zone.

Sources

• NYSDOT Region 10 corridor improvement program
• NY 511 roadwork alerts (511ny.org)
• Suffolk County Department of Public Works notices