A head-on collision at rush hour on the Mass. Ave. Bridge left one dead and created massive traffic problems.
Boston traffic on Mass.. Ave towards Cambridge is being detoured down Beacon Street, with police saying the bridge will be shut for "the foreseeable future."
Other streets in the area are also congested and the BU bridge is also heavy traffic.
Boston police are being sent to key intersections to prevent drivers gridlocking the cross streets.
The MBTA has numerous bus alerts due to traffic
"Diversion on the Route 01 Due to automobile accident on the Mass Ave. Bridge. The bridge has been closed in both directions. Connections can be made on Mass Ave. at Vassar St. Cambridge and on Mass Ave. at Commonwealth Ave. Boston."
7:36 PM: police say they will open the bridge in about half an hour.
8:08 PM: The Bridge is open with traffic moving in both directions.