Twitter Facebook Beginning Saturday, April 17, riders on the MBTA Green Line B Branch will trade short-term disruption for long-term gain. The T will speed up its Green Line B Branch Station Consolidation Project along the West Campus stretch of Commonwealth Avenue by shutting down trolley service between Washington Street and Kenmore Square for a total of seven weeks this spring, so construction crews can work 24 hours a day, 7 days a week. Shuttle buses will replace trolley service. The good news is that the project consolidating four West Campus T stops into two along Comm Ave should finish months early, according to Angel Peña, chief of the MBTA’s ongoing Green Line Transformation. The T will specify completion only in “late 2021,” but that’s a jump forward from the original February 2022 target.