[11] (The Old Colony had left-hand running until 1895, so the building was positioned to serve trains inbound to Boston.

[13][14] State-funded construction of platform canopies and other improvements related to the crossing elimination took place in August through November 1937.

[16][17] Quincy Adams station closed along with the rest of the Old Colony system on June 30, 1959, and was later demolished.

Until 2012, access to the garage had only been from ramps off I-93 and Route 3, with the Burgin Parkway entrance leading only to a 160-space surface lot.

[22] Although built to last 50 years, the $28 million garage at Quincy Adams began suffering concrete damage due to water leakage and ill-fitting structural elements.

In 2015, the MBTA began a $4.4 million project to address urgent structural issues with the two garages, though full repair or replacement was still needed.

[29][30] Until December 2018, the only pedestrian access to the station was via the park and ride garage off Burgin Parkway.

The MBTA opened a pedestrian entrance on the east side of the station leading to Independence Avenue in 1981.

[33] The entrance was a point of contention between the cities of Quincy and Braintree; in February 2014, officials from the two towns proposed that a lock system be created where only nearby residents could enter from Independence Avenue.

[34] The garage improvements included repairs to the pathway from Independence Avenue, but the MBTA claimed that the entrance was a "city issue" and did not plan to reopen it as part of the project.