The MBTA announced they will add extra Red Line service on Sunday to accomodate the expected surge in ridership for the St. Patricks Day parade in South Boston. The MBTA will also add extra MBTA police officers to help with crowd control and safety.
Because of the parade route, service on several bus lines will be affected during the parade.
Route #9 (City Point – Copley), and the Route #11 (City Point – Downtown) will CEASEservice until the parade is finished at approximately 4:30 p.m.
The rest of the service changes can be found here