A Message from the Supervisor

“Welcome to Islip, the 3rd largest town in New York State, but with an endearing small town feel. We are so proud of our town…our beaches, golf courses, marinas, parks, housing opportunities for all, businesses, industrial parks, healthcare and educational institutions including our own Islip MacArthur Airport that provides many job opportunities. I sincerely hope you find this website helpful.” — Angie

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The New York State Department of Transportation today advised motorists that the westbound Long Island Expressway (Interstate 495) will be closed to traffic between Exit 55 (Suffolk County Route 67/Motor Parkway) and Exit 49 (State Route 110) in the Towns of Islip, Smithtown, and Huntington in Suffolk County, from 10 p.m. until 5:30 a.m., weeknights, beginning Tuesday, September 20, to facilitate a pavement resurfacing project. Traffic will be detoured onto the North Service Road.

Additionally, one westbound lane will be closed between 8:30 p.m. and 10 p.m. The closures are expected to continue for approximately three weeks, weather permitting.

The electronic variable message signs along the L.I.E. will display further updates.

The public outreach office for the Long Island Expressway Pavement Renewal Project is available to assist motorists with any questions or comments by calling (516) 282-3571 or emailing This email address is being protected from spambots. You need JavaScript enabled to view it.. Motorists are urged to plan accordingly and drive responsibly in work zones.

For up-to-date travel information, call 511, visit or download the free 511NY mobile app.

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