Drivers trying to enter Boston from the north tonight will have to detour onto surface streets because Interstate 93 South will be closed in Somerville, officials said.
The highway will be closed from 11 p.m. to 5 a.m. Friday to allow workers to prepare for the 2½-month closure of the Callahan Tunnel, the Department of Transportation said in a statement.
During tonight’s closure, workers will install signs to alert drivers to detours during the Callahan closure, MassDOT said.
Traffic will detour off I-93 from Exit 28 in Somerville and will be allowed to enter the highway again at the Haymarket on-ramp, MassDOT said. Traffic to Logan International Airport will be directed through city streets to the Ted Williams Tunnel.
The Callahan, which carries traffic one way from Boston’s North End to the airport, will close at 11 p.m. Friday to allow for rehabilitation of the 52-year-old tunnel.
It will remain closed through March 12, MassDOT said. Drivers who need access to the airport and East Boston can take the Ted Williams Tunnel, the Tobin Bridge, and Route 16 East to 1A South.