Two travel lanes of Interstate 93 in Somerville, Massachusetts, are closed Monday for bridge deck repairs. MassDOT said the repairs are being done currently on the northbound side of the highway resulting in the closure of the travel lanes in the area of exit 21 (Route 28/Route 38).Info: Check trafficOfficials said the lanes will be closed until about 7 a.m.Those traveling through the area should expect delays, reduce speed and use caution.