After months of preparation, construction work is to start in earnest on a major highway project in western Massachusetts.
MassDOT announced Tuesday that the major rehabilitation of the elevated part of Interstate 91 through downtown Springfield will begin in mid-December.
The number of travel lanes will be reduced by one in each direction. Seven ramps leading to and from the highway will be closed.
MassDOT boss Stephanie Pollock said detours will be in place and key intersections monitored by newly installed cameras.