Deer Park is a station along the Main Line (Ronkonkoma Branch) of the Long Island Rail Road. It is officially located at Pineaire Drive, Executive (formerly Grant) Avenue, and Long Island Avenue near Deer Park, New York. The actual location is in West Brentwood, New York, directly over the Deer Park border.HistoryDeer Park, sometimes mentioned as Deerpark, station was previously located at the bridge over New York State Route 231, until it was moved as part of a major reconstruction project of the line at Ronkonkoma, Central Islip, Brentwood, Deer Park, and Wyandanch. The original station was built in 1842, then rebuilt in 1884, and again 1936 for the bridge over Deer Park Avenue (NY 231 did not exist at the time). The 1987-built station was built close to the former Pine Aire station near the Pilgrim State Psychiatric Center (see below), served as a replacement for both stations, and was also originally planned also to replace Brentwood Station until public opposition from Brentwood thwarted that proposal. As a result, some people refer to it as "Pine Aire" station rather than its given name. In the process of reconstruction, a former one-lane bridge was blocked off.
