new tactile platform edging were installed. The work was performed on one side of the platform at a time with no station closures. The project also included new track lighting, guardrails, and expansion joints. The project, originally expected to cost $2.3 million, was issued a notice to proceed in December 2012. Phase 1, which lasted from April to August 2013, focused on the inbound side of the platform. Original plans called for an exit-only ramp on the north end of the Orange Line platform to be constructed as part of Phase 1; however, this was put off due to the discovery of buried utilities not present on site plans. Phase 2, from August to December 2013, focused on the outbound side of the platform. From March 2 to June 30, 2014, the MBTA constructed the emergency exit ramp and a public restroom as Phase 3. The existing elevators, which connect the fare mezzanine to the Orange Line platform and the busway, were built with the station and renovated in 1987. (This made Oak Grove the first Orange Line station to be accessible.) Three elevators are being added to the station – an elevator between Washington Street and the mezzanine, a redundant elevator between the mezzanine and the platform, and a redundant elevator between the busway and the mezzanine – and one existing elevator renovated. The MBTA awarded a $22.5 million construction contract in August 2019, and work began that December. The Washington Street elevator opened on January 31, 2021, followed by the first new platform elevator in August. The new east elevator opened in May 2022, with the replacement platform elevator completed that November. The entire Orange Line, including Oak Grove station, was closed from August 19 to September 18, 2022, during maintenance work. The Haverhill Line stopped at Oak Grove during the closure to provide alternate service. Oak Grove was retained as a permanent Haverhill Line stop after the Orange Line closure. References External links MBTA – Oak Grove MBTA – Oak Grove Station Accessibility Improvements Google Maps Street View Washington Street entrance, Banks Place entrance Orange Line (MBTA) stations Railway stations in Middlesex County, Massachusetts Malden, Massachusetts Railway stations in the United States opened in 1977