Beyond Quincy Center, the Braintree extension runs southward to Braintree, opened on March 22, 1980, via an intermediate stop at Quincy Adams which opened on September 10, 1983 due to delays.
The extension was part of the massive 1965 extension plan, although it was delayed due to questions over station siting in Braintree.
The Boston Transportation Planning Review, published in 1969, proposed North Braintree and South Braintree stations following the Quincy Center station.

Several outlying sections of the MBTA subway system, including Quincy Adams and Braintree, originally charged a double fare to account for the additional costs of running service far from downtown.
Passengers paid two fares to enter at the stations, and an exit fare when leaving the station.
Double fares on the Braintree extension, the last on the system, were discontinued in 2007 as part of a wider fare restructuring.
Beyond Quincy Center, the Braintree extension runs southward to Braintree, opened on March 22, 1980, via an intermediate stop at Quincy Adams which opened on September 10, 1983 due to delays. The extension was part of the massive 1965 extension plan, although it was delayed due to questions over station siting in Braintree. The Boston Transportation Planning Review, published in 1969, proposed North Braintree and South Braintree stations following the Quincy Center station.
Several outlying sections of the MBTA subway system, including Quincy Adams and Braintree, originally charged a double fare to account for the additional costs of running service far from downtown. Passengers paid two fares to enter at the stations, and an exit fare when leaving the station. Double fares on the Braintree extension, the last on the system, were discontinued in 2007 as part of a wider fare restructuring.
Red Line (MBTA)