Northport is a stop on the diesel Port Jefferson Branch with a single track that has a single high-level platform on its north side built around 1985 for the C1 dual-mode prototypes. This platform is full length and can accommodate 12 cars. It was slightly modernized at some point with new black lampposts added but no other modifications. The only amenities for waiting passengers on platform are two-silver canopy structures. In the middle of the platform is a simple concrete pedestrian bridge with a chain-linked fence over the span of the overpass. This pedestrian bridge leads to the southside parking lot. It crosses over space along the ROW for a south track at has a small intermediate landing at the level of a regular high-level platform so a second platform for the second track could have been added without rebuilding the overpass. This parking lot is accessed from parallel 10 Avenue with a number of driveway entrances.
There is also a large parking lot along the actual platform with entrances at each end, from Monmouth Court and also a loop from Belrose Avenue where connecting Suffolk Transit Route 41 and routes H4 and H6, operated by Huntington Area Rapid Transit (the other municipal bus operator on Long Island is Long Beach Bus). Between the bus loop and the eastern end of the platform is the station's circa 1910 two-story station house. The first story is all brick and the second is painted a cream color with windows poking out of the steep gabled roof. On each side of the station the roof continues a short distance held up by brick pillars covering the station's TVMs. Beneath these roofs are the station's TVMs. Inside the station house is a small waiting area and ticket office closed in 1996. There is also a newsstand in one corner of the waiting room (without its own enclosure) so the station is always staffed, albeit by the proprietor of the newsstand.
The platform ends just beyond the station house with its ramp, this leads to a sidewalk along the track, past a small village green before the grade crossing of Vernon Valley Road and to a walkway along the opposite side of the track to the start of the south parking lot.
All Photos: 27 May, 2014