Bridge Replacement - S-17-016 (3GF)- Webster Avenue over MBTA and BMRR

The City of Somerville is requesting bids on the replacement of Bridge No. S-17-016, which carries Webster Avenue over the MBTA and CSX Railroad, with bids due October 6, 2026. Bidders must be pre-qualified by the Massachusetts Department of Transportation in the BRIDGE - CONSTRUCTION category prior to submission.

The scope involves furnishing all labor, materials, equipment, and services to replace the existing bridge with a single-span steel plate girder structure and reinforced concrete deck. The construction documents and specifications package (CDSP) details technical requirements, material specifications, construction sequencing, and quality assurance protocols. Work must comply with prevailing wage requirements, environmental regulations, and public safety protocols affecting MBTA and railroad operations during construction.

The contract structure includes provisions for change orders, schedule adjustments, and performance penalties. Payment is contingent upon completion milestones and inspection approval, with pricing submitted according to the bid schedule format in the CDSP. Bonding, insurance, and financial requirements are specified in the contract documents. Funding is established by the City of Somerville with oversight from the Massachusetts Department of Transportation.