608020 BOURNE Bridge Replacement, B-17-005, (ARF) (SAGAMORE BRIDGE), US 6 over the Cape Cod Canal,

The Massachusetts Department of Transportation (MassDOT) is soliciting letters of interest for a design-build project to replace the Sagamore Bridge (B-17-005) over the Cape Cod Canal on US 6. This extensive project involves the final design and construction of new twin bridges and the realignment of Route 6 and Route 3 within a 2.11-mile project limit. The scope includes the construction of local street connections, multiple intersections, roundabouts, new traffic signals, and a network of sidewalks and shared-use paths. Additional requirements encompass geotechnical design, utility relocations, environmental permitting, and the management of sediment disposal and hazardous material removal, such as asbestos and PCB ballasts. The estimated total value of the contract is 1,603,900,000.00 dollars. The procurement follows a two-phase Best Value Design-Build process. In the first phase, proposers are evaluated based on their Statement of Qualifications (SOQ), with a focus on experience in long-span bridge design over active waterways, accelerated work schedules, and coordination with entities like the MBTA and MassCoastal Railroad. A shortlist of two to five design-builders will then be invited to submit technical and price proposals in the second phase. The contract incorporates strict federal and state compliance standards, including the Davis-Bacon Act, non-discrimination provisions, and specific bonding requirements where performance and payment bonds must equal at least 100 percent of the estimated construction cost. Quality assurance is managed through a system of specification, engineering, and acceptance limits, requiring a NETTCP QA Technologist for quality control and an AWS Certified Welding Inspector for bridge fabrication.