American Council of Engineering Companies of Massachusetts (ACEC-MA)
Massachusetts Bay Transportation Authority
Shawsheen River Bridges Reconstruction

Louis Berger won a Silver Award from the American Council of Engineering Companies (ACEC) Massachusetts for the preservation of the Shawsheen River bridges.

The Massachusetts Bay Transportation Authority (MBTA) selected Louis Berger to provide emergency repairs and rehabilitate and strengthen two 160-year-old historic stone arch bridges to carry modern train loads, as well as add another track over each bridge. The bridges, located approximately two miles apart on the Shawsheen River in Andover, Massachusetts, carry MBTA’s Haverhill Line commuter trains, Amtrak passenger trains and freight trains travelling north and west. Louis Berger’s repairs and restoration – which included a unique design that embedded new structures within the stone arch – more than doubled capacity of the bridges and lifted the train speed restrictions.

The ACEC Engineering Excellence Awards celebrate the most outstanding project achievements in the field of engineering around the world. Projects are judged based on originality, innovation, value to the public and the engineering profession, complexity, social and economic considerations, sustainability, and exceeding client needs.