I-495 Lowell Bridge Bundle Design-Build - Middlesex Corporation

I-495 Lowell Bridge Bundle Design-Build

Lowell, MA
Massachusetts Department of Transportation

Design and replacement of six bridges over I-495.

The Middlesex Corporation designed and replaced six bridges carrying I-495 northbound and southbound over the Concord River, the MBTA commuter rail tracks, and Woburn Street in Lowell. The staged construction required three lanes to remain open in both directions during all peak travel periods. To accomplish this, two temporary crossovers were constructed in the highway median to divert one lane of traffic into a contraflow lane in the opposing barrel. The Traffic Management Plan included temporary signals to handle traffic that was detoured past closed ramps.

Project Numbers


Project value


Tons of hot mix asphalt


SY pavement milling


LB of reinforcing steel installed


SF of MSE wall


LB of structural steel