Overnight Sunrise Highway closure in Islip to last two months

Westbound Sunrise Highway at Exit 43 in Islip Town is closing on weeknights from 10 p.m. to 5 a.m. for about two months, a work window that hits the overnight drivers most likely to feel the delay first. The New York State Department of Transportation is advising motorists about the shutdown on State Route 27, one of Suffolk County’s most important east-west routes.

The timing is meant to keep daytime traffic moving, but it does not erase the burden for people traveling after dark. Late-shift workers, airport runs, delivery trucks and service vehicles all depend on predictable access to Sunrise Highway, and a closure at Exit 43 can push traffic onto nearby roads in Islip Town. The tightest pressure points are likely to come just before the 10 p.m. shutdown and again near the 5 a.m. reopening, when drivers merge back into the corridor.

Because Sunrise Highway is a major commuter and freight artery, even an overnight restriction can ripple beyond the exit itself. Drivers moving through the area should expect lane changes, signage and work crews around the closure, with extra caution needed in the work zone. For residents and businesses nearby, the practical concern is not daytime congestion but the effect on overnight schedules, especially for employees arriving before dawn and trucks trying to keep to fixed delivery windows.

The local road network around Brentwood Road and Connetquot Avenue has already served as an alternate path on earlier Sunrise Highway work in Islip Town, showing how quickly surrounding streets can become the fallback when the state limits access to the highway. That kind of rerouting can slow trips well beyond the immediate closure and put added traffic on neighborhood roads.

The Islip project also fits a larger pattern of overnight road work on Long Island. Newsday has reported Sunrise Highway closures in Bay Shore tied to concrete median installation, overnight maintenance in Islip using alternate routes between Brentwood Road and Connetquot Avenue, and night work in Brookhaven Town related to the Station Road bridge. The New York State Department of Transportation has also been juggling pavement and maintenance jobs on the Long Island Expressway.

For Suffolk commuters, the takeaway is simple: Exit 43 is not a place to count on after 10 p.m. for the next two months, and the overnight detour pattern will shape travel well before the morning rush returns.