Sagtikos State Parkway

Sagtikos State Parkway
Aerial view of the Sagtikos State Parkway cutting through western Suffolk County. The parkway runs northsouth, connecting the Southern State Parkway to the Northern and Sunken Meadow State Parkways, and serves as a key corridor between Long Islands South Shore and North Shore. File photo: Audley C Bullock, licensed.

The Sagtikos State Parkway is a northsouth limited-access parkway in western Suffolk County that links the Southern State Parkway with the Northern State Parkway and continues north as the Sunken Meadow State Parkway toward Long Island Sound. Built in the mid-20th century as part of Long Islands parkway network, it remains one of the main cross-island connectors for drivers moving between the South Shore and North Shore.

Like other Long Island parkways, the Sagtikos is intended for passenger vehicles. Commercial trucks, tractor-trailers, and other oversized vehicles are generally prohibited, and drivers should always follow posted parkway restrictions and clearance warnings.

Route and Features

  • Southern Terminus: Southern State Parkway (West Islip area); southbound connections lead toward the Robert Moses Causeway and the ocean-side park and beach corridor.
  • Northern Terminus: Transition to the Sunken Meadow State Parkway at the Northern State Parkway interchange in the Commack area.
  • County: Suffolk County
  • Character: Limited-access parkway with wooded medians, older overpasses, and several closely spaced interchanges.
  • Restrictions: Passenger vehicles only; commercial trucks, tractor-trailers, and many oversized vehicles are prohibited.

Major Interchanges & Access Points (south north)

Interchange names, local ramp movements, and exit references can vary by direction and signage. Use posted signs and current navigation when planning a trip.

Exit / JunctionDestination / RoadwayNotes
Southern TerminusSouthern State Parkway / Robert Moses CausewayMajor parkway link for trips toward the South Shore and barrier beach corridor
NY-27AMontauk Highway (West Islip / Bay Shore)Local South Shore access
NY-27Sunrise HighwayMajor east-west connection
Pine Aire Drive / Bay Shore RoadLocal access near Brentwood and Bay Shore; ramp patterns are limited
CR-13Crooked Hill RoadAccess for Brentwood and Suffolk County Community College Grant Campus area
I-495Long Island Expressway (Exit 53 area)Key regional east-west link
CR-67Motor ParkwayHauppauge / Brentwood business corridor
Vanderbilt Parkway / Townline RoadLocal access in the Dix Hills / Commack area; movements may vary
NY-25Jericho TurnpikeCommack / Smithtown access
Northern TerminusNorthern State Parkway / Sunken Meadow State ParkwayNorthbound continuation toward Sunken Meadow State Park and Long Island Sound

Vicinity of the Sagtikos State Parkway


Notable Facts

  • The Sagtikos forms one of Long Islands main northsouth parkway links, tying together the Southern State, Northern State, and Sunken Meadow parkway corridors.
  • It is an important connection for drivers transferring between the Long Island Expressway and Long Islands state parkway system.
  • Older parkway geometry, short merge areas, and heavy commuter traffic can make driving feel tighter here than on newer expressways, especially near Sunrise Highway and the LIE.
  • There are no standard service plazas on the parkway itself, so plan fuel, food, and restroom stops off-route.

Traveler Tips

  • Rush hours, summer beach traffic, incidents, and storm cleanup can all affect travel times on this corridor.
  • Check 511NY or a current navigation app before you go for live traffic, construction, and closure information.
  • If you are driving a rental truck, moving van, or towing equipment, confirm that your vehicle is allowed before using any Long Island parkway.