The Cambridge subway opened from
Park Street Under to on March 23, 1912, with intermediate stops at
Central and
Kendall. On June 26, 1985, the name was reverted to
Kendall/MIT as part of a series of station name changes. During the 1980s, the MBTA rebuilt Kendall/MIT and other Red Line stations with longer platforms for six-car trains and with elevators for accessibility. The rebuilt station was dedicated in October 1987 and six-car trains began operation on January 21, 1988. The main southbound headhouse was reconstructed as part of the Kendall Square Initiative development project. Utility work began in July–August 2020, with excavation beginning in October. Part of the old headhouse was closed in November 2020 for construction of the interim headhouse. The temporary southbound headhouse opened on January 22, 2022. The permanent headhouse opened on February 11, 2023. The main northbound headhouse was also reconstructed as part of the adjacent 325 Main Street project. The new glass headhouse has
redundant elevators and the roof is part of an elevated public plaza. Work on the headhouse began in July 2022. A temporary outbound headhouse, located inside 325 Main Street, was completed in June 2024. The old headhouse was demolished, and steel for the new headhouse assembled, in July 2024. The temporary headhouse included an art installation by
Mount Holyoke College professor Ligia Bouton entitled "25 Variable Stars: A Temporary Monument for Henrietta Swan Leavitt". It consisted of
lenticular prints honoring
Henrietta Swan Leavitt's discovery of the
period-luminosity relation for
Cepheid variable stars. The new permanent headhouse was largely complete by mid-September, with a certificate of occupancy expected within a month, but opening was delayed until 2026. The new headhouse ultimately opened on April 20, 2026.
Circumferential service proposals ; this location was also a proposed stop on the
Urban Ring service. Kendall/MIT was a proposed stop on the
Urban Ring – a circumferential
bus rapid transit (BRT) line designed to connect the existing radial MBTA rail lines to reduce overcrowding in the downtown stations. Under draft plans released in 2008, new surface-level BRT platforms would have been constructed on Main Street at Kendall/MIT. The project was cancelled in 2010 In 2012, the state studied the feasibility of sending some
Framingham/Worcester Line trains to
North Station via the
Grand Junction Railroad, including the possibility of a new commuter rail station at Kendall. The possible station would have consisted of a single platform between Main Street and Massachusetts Avenue, and was estimated to cost $7.5 million. After objections from the City of Cambridge over potential traffic problems due to the
grade crossings on the Grand Junction, the MBTA declined to pursue implementation of the proposed service. In 2014, it was revealed by the state that the stop would be part of the proposed
Indigo Line system with frequent
DMU service, but that plan was canceled in 2015 for financial reasons. A 2019 report indicated that daily boardings at the station would double to 30,000 by 2040, increasing the need for relief service on the Grand Junction and other corridors. As of 2024, two possible locations for a
Broadway station on the Grand Junction Branch are being considered: one north of Broadway and one south of that point. This station, and especially the south of Broadway station, would connect with Kendall/MIT. ==References==