Eastbound Portion of Cambridge Street Tunnel Closed as of 11 pm Oct 20 through Noon Oct 21

The City’s contractor, MIG Corporation, will close the eastbound portion of the Cambridge Street Tunnel (Harvard Square towards Cambridge Fire Headquarters), in order to pour new concrete flooring.  The eastbound portion of the tunnel will be closed as of 11 p.m. on Monday, Oct. 20 12 p.m. on Tuesday, Oct. 21. Motorists travelling in the westbound lanes will not be impacted.   There will be a final westbound closure at the end of October.   Construction activities in the tunnel should be complete in November. 

Link to detour map