Beginning May 18th, School Street on the Village of Westbury/New Cassel border will be closed to both vehicular and pedestrian traffic for six months for the building of an underpass that will eliminate the Long Island Rail Road grade crossing. Information on the detour routes can be found below.
The grade crossing eliminations will enhance safety, reduce noise and air pollution and reduce traffic back-ups, as vehicles will no longer need to wait at crossings as trains pass, which can be as much as 35 percent of the time during rush hours. School Street is one of eight grade crossings being eliminated as part of MTA Construction & Development’s LIRR Expansion Project from Floral Park to Hicksville.
Preparation for underpass construction began with utility relocation last fall and railroad signal modification, which began in April. Monday’s street closure will be followed by sidewalk and curb demo and excavation.
The underpass’ concrete U-structure will be constructed, and the steel bridge that will carry the LIRR’s Main Line over School Street will be erected on site. During a weekend-long closure of the Main Line on September 12th and 13th, Third Track Constructors (3TC) crews will remove the tracks and remaining soil, followed by pushing the roadway underpass U-structure with the railroad bridge on top of it into place with a series of hydraulic jacks. LIRR crews will then install the rail, electric power, communications and signals in time for peak service to resume on the morning of September 14th.
The roadway is scheduled to be reopened in November with two traffic lanes and a pedestrian walkway on the east side.