The Setauket-Port Jefferson Station Greenway is a paved walking and biking trail on state-owned land, and its eastern end is in Port Jefferson Station. Here is where it runs, who looks after it, and what two 2026 state actions mean for Port Jefferson Station homes near the corridor.
TL;DR
- The greenway runs from Route 25A at Limroy Lane in Setauket to Route 112 at Hallock Avenue in Port Jefferson Station, per the NYS Department of Transportation.
- A state law signed July 6, 2026 provides for a conservation easement so the corridor will not become a roadway.
- On September 30, 2026 the MTA bought more than 46 acres of the former Lawrence Aviation site, keeping a possible LIRR rail yard on the table.
- The state says no current plans or funding exist for the work that would need a yard, and a yard would mean relocating the trail, not losing it.
Table of contents
- Where the Port Jefferson Station Greenway runs
- Who owns and maintains the trail
- The July 2026 conservation easement
- The Lawrence Aviation purchase and a possible rail yard
- What it means for a house near the greenway
Where the Port Jefferson Station Greenway runs
A May 22, 2023 NYSDOT release describes the greenway as a hilly three-mile trail from State Route 25A at Limroy Lane in Setauket to State Route 112 at Hallock Avenue in Port Jefferson Station. A Town of Brookhaven release from June 1, 2012 says Phase 1, ending near Sheep Pasture Road, was completed in May 2009, and Phase 2 would extend the trail to Route 112 and Route 25A in Port Jefferson Station.
Lengths differ by source: three miles (NYSDOT), three and a half (Brookhaven, 2012), and 3.4 in a July 7, 2026 Assembly release.
Suffolk County's Transit to Trails map for the Port Jefferson LIRR station lists the greenway about 0.3 miles from the station.
Who owns and maintains the trail
According to the July 2026 Assembly release, the state acquired the corridor in the late 1950s for a proposed Route 25A bypass. A TBR News Media report from April 24, 2026 says volunteers from Friends of the Greenway, part of the Three Village Community Trust, handle routine cleanup, while the state Department of Transportation still owns the trail and handles heavy work such as removing fallen trees.
The July 2026 conservation easement
On July 6, 2026 the Governor signed S10161/A10341. The Governor's office says the bill provides for a conservation easement conveyed by NYSDOT so the property's permanent future will not include a roadway, while keeping the bike and pedestrian greenway. The Assembly release describes it as a perpetual easement that prevents the corridor from being converted into a vehicular bypass.
The Lawrence Aviation purchase and a possible rail yard
On September 30, 2026 the Governor's office announced that the MTA bought more than 46 acres at 100 Sheep Pasture Road, part of the 126-acre former Lawrence Aviation site, from the Suffolk County Land Bank. The same release says there are no current plans or funding for the Port Jefferson Branch improvements that would require a rail yard there. If a yard is built, NYSDOT would relocate the greenway, and the Assembly release says the trail and its easement would be rerouted to the south of the yard.
A Suffolk County release from the same day says a separate closing covers about 40 more acres of the site for solar development. A TBR News Media editorial on October 10, 2026 asked where a relocated route would go.
What it means for a house near the greenway
- The corridor stays a trail. The July 2026 law provides for an easement on the state land that rules out a roadway.
- A reroute depends on a project with no plan or funding yet. That was the state's account on September 30, 2026.
- The details are parcel-level. Distance to an access point and whether a lot borders the state corridor show up on a survey, not in a press release.
For the station area and commute: living in Port Jefferson Station.
