Oak Grove station is a Massachusetts Bay Transportation Authority (MBTA) intermodal transit station in the northern section of Malden, Massachusetts, just south of the Melrose border. It is the northern terminus of the rapid transit Orange Line and a stop on the Haverhill Line commuter rail service. The accessible station has a 788-space park and ride lot and is served by four MBTA bus routes. The Boston and Maine Railroad opened through Malden in 1845, and a stop at Oak Grove was added by the 1870s. It closed in 1958 amid a series of cuts. The MBTA opened the modern station in March 1977 as the northern terminus of the Haymarket North Extension of the Orange Line. It also temporarily served as the southern terminus of Haverhill Line service in 1984–85 after a bridge fire at North Station. Renovation work on the Orange Line platform, including a new emergency exit ramp, took place in 2013–14. Three new elevators were added in 2019–2022, with one existing elevator replaced. Haverhill Line resumed stopping at the station during a 2022 closure of the Orange Line; Oak Grove was retained as a stop after. Station layout Oak Grove has a single island platform serving the two tracks of the Orange Line. Terminating trains use both tracks, changing tracks at a crossover just south of the station. A single side platform serves the Haverhill Line track on the east side of the Orange Line. A fare lobby is located over the tracks at the south end of the station. It has entrances from Washington Street on the west and Banks Place on the east, with elevators to the lobby from both entrances and the Orange Line platform for accessibility. Four MBTA bus routes serve Oak Grove station. Routes , , and use a dedicated busway in the parking area on the east side of the station, while route runs on Washington Street on the west side of the station. History Former station The Boston and Maine Railroad (B&M) opened its mainline from Wilmington Junction to Boston on July 1, 1845, allowing it to operate independently of the Boston and Lowell Railroad. Oak Grove was not initially a stop on the line, but was in service by the 1870s. The two-story wooden station building, located on the west side of the tracks just south of Oak Grove Court, had a prominent central gable. The Western Route