About this Project
FST was the design engineer of record for the replacement of the Morton Street Bridge in the Mattapan section of Boston. As part of the Massachusetts Department of Transportation's Accelerated Bridge Construction program, the new Morton Street Bridge was rolled into place using SPMT – Self Propelled Modular Transporters. Under this innovative program, the full bridge replacement required the tracks beneath it to be closed for only a weekend and the roadway it holds to be shut down for a little over a week. The bridge, which carries Morton Street over the MBTA tracks in Mattapan, was closed to traffic on Friday, August 8, 2014, at 9 p.m. and demolished on Saturday, August 9. The new bridge, which had been constructed at an adjacent site, was rolled into place in the early morning hours of Sunday, August 10. Trains were running beneath the structure and pedestrians were walking over it by Monday, August 11. On Sunday, August 18, a day ahead of schedule, traffic was traveling over the bridge once again.
Owner: Massachusetts Department of Transportation
Location: Boston, Massachusetts
Highlights: In "Tweeting" about the project, MassDOT noted that it is a "two-year project being done in 10 days." For a brief article on this project, click here.