A digital traffic sign over Bostons Commonwealth Avenue Bridge warned, "It's coming. It's bad," before a $110-million Commonwealth Bridge westbound bridge replacement project started. Intensive construction to replace the westbound bridge is scheduled to last for slightly more than two weeks, from July 26 through Aug. 11, with completion expected by next spring.
The project to replace the deteriorating 52-year-old bridge began last July when crews completed the eastbound bridge and Massachusetts Bay Transportation Authority Green Line B portions of the bridge that opened back up to preconstruction traffic patterns three weeks early. Since then, crews have completed utility relocations, roadway and traffic-signal work, fencing, curb setting, and finishing work on sidewalks.