Assembly is a rapid transit station on the MBTA's Orange Line, located in the eastern portion of Somerville, Massachusetts. It is an infill station, located on a section of the Orange Line that has been active since 1975. The station, which opened on September 2, 2014, was the first new station on the MBTA subway system since 1987.Assembly station is meant to provide convenient access to Assembly Square - a major retail and residential development located on the site of a former Ford assembly plant - and the adjacent Assembly Square Marketplace. The Assembly Square project is estimated to generate 45,000 new vehicle trips each day, and the station was intended to reduce the number that use private automobiles by diverting travelers to mass transit. Ridership is projected to reach 5,000 riders per day in 2030; it averaged 1,864 during its first year.Station layoutAssembly station is in the rear of the Assembly Square development, on the existing Orange Line tracks near the Mystic River.The station consists of a single island platform 410ft long, to handle up to 6 railcars on each side. Unlike Community College, Sullivan, and Wellington, Assembly does not have a second island platform to serve the (currently unused) third track, which was intended to be an express track. The station has two headhouses, one on each end of the platform. Two footbridges, one from each headhouse, cross over the inbound track and connect to parking on G Street. The station is fully accessible and includes bicycle storage facilities.