Overview
Route 110 — known as Broad Hollow Road in its southern sections and Walt Whitman Road in its northern sections — is Long Island’s most important north-south commercial arterial, connecting Amityville on the south shore to Huntington on the north shore in a 15-mile corridor. Carrying approximately 50,000 vehicles per day, the road passes through Farmingdale, Melville, and the edge of Huntington, serving as the primary access point for the Hauppauge Industrial Park — the largest industrial park in the northeastern United States with over 1,400 businesses and 55,000 employees.
The road’s southern portion in Amityville is a traditional two-lane commercial arterial passing through the hamlet’s historic downtown. As it crosses into Farmingdale, Route 110 expands to a divided highway section and becomes progressively more commercial. The LIE interchange at Exit 49 in Melville is a major traffic generator, handling enormous volumes of Hauppauge Industrial Park-bound truck and commuter traffic. North of the LIE, the road transitions through the affluent communities of Melville and eventually into Huntington village.
The Walt Whitman connection is deeply local: the poet was born in West Hills (now part of the Huntington area) in 1819, spent his youth on Long Island, and returned to the island frequently throughout his life. Walt Whitman Road honors this connection, and the Walt Whitman Birthplace State Historic Site is located just off the route. Walt Whitman High School — one of Long Island’s most academically recognized schools — is also named in his honor and located on Route 110.
The Hauppauge Industrial Park’s relationship with Route 110 is the dominant transportation story of this corridor. The park contains businesses ranging from pharmaceutical manufacturers (Eaton Vance, Canon) to defense contractors, and its freight and employee traffic has shaped Route 110 into a corridor that simultaneously serves suburban commuters, commercial trucks, and local retail customers — often in conflict.
Dangerous Sections
Route 110 / LIE Exit 49 interchange area (Melville): The confluence of Route 110 with LIE Exit 49 is one of the highest-crash locations in western Suffolk County. The interchange handles merging traffic from the LIE (already a crash-prone segment), and the adjacent access roads to the Hauppauge Industrial Park add additional volumes and truck conflicts.
Route 110 / Jericho Turnpike (Route 25) intersection (Melville): This four-way intersection handles crossing flows from two major arterials, with significant truck traffic adding to the volume. Left-turn and rear-end crashes are the dominant crash types.
Farmingdale commercial corridor: The Route 110 section through Farmingdale features dense commercial development with frequent driveway cuts and closely spaced signals, producing rear-end and left-turn crashes.
Towns Along This Route
Current Conditions
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Recent Incidents
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Accident Statistics
Route 110 crash data reflect its character as a high-volume commercial corridor with significant truck traffic. Truck-involved crashes are overrepresented relative to truck percentages of total volume. The LIE interchange area accounts for the highest-severity crashes on the corridor.