This summer, the SPS-Walsh JV Team at the Newton/Weston I-90/I-95 Bridge Bundle project successfully completed a rapid bridge replacement of the Mass Pike (I-90) over MBTA Railroad.
The rapid bridge replacement was completed over two (2) separate 55-hour weekend shutdowns which included reducing I-90 traffic down to one (1) single lane each direction and full closure of the MBTA Railroad.
The scope of work included complete demolition of existing bridge superstructure, backwall concrete repairs, installation of precast bridge units, placement of rapid-setting concrete batched by on-site volumetric mobile mix trucks, milling, and paving of roadway approaches.
Both weekend bridge replacements were completed ahead of schedule with early opening of I-90 to all travel lanes prior to the 5AM Monday morning rush hour and no impacts to the return of Commuter Rail service.
This video by Savanna Media documents the process and the planning that went into the two rapid replacement weekends.
