Site work for a bridge / tunnel in Hancock, Massachusetts. Completed plans call for site work for a bridge / tunnel.

Whitman Road Culvert Replacement :- The project includes, but is not limited to, the installation of a new 4-sided precast concrete box culvert, and removal of the existing 36"-48" steel culvert. The project will allow the closure of the road for up to 90 days. The new culvert is in a different alignment than the existing culvert, allowing the existing culvert to maintain stream flow during construction of the new culvert. Associated work includes grading to create the inlet and outlet of the new culvert, stream grading to connect the new stream alignment to existing, creation of a wetland mitigation area, and grading/removal/replacement of a portion (approximately 7,200 SF) of the existing road pavement surface. 1. All work shown on project plans including but not limited to: installation and maintenance of all necessary erosion controls prior to and during construction, excavation and installation of new 4-sided concrete box culvert, grading at both ends of culvert to provide culvert inverts as shown, stream bed construction to plan specifications, construction of wetland mitigation area, removal of existing steel culvert and related backfilling, sawcutting, milling, and repaving of road surface where necessary, all loaming and seeding to stabilize disturbed areas on site. Work also includes all the necessary traffic control and proper signage to manage traffic flow safely until work is complete. 2. The concrete box culvert and attached improvements supporting guard posts/rails will require submittal and approval by both the design engineer (Guntlow & Associates, Inc.) and MassDOT Chapter 85. To facilitate contractor approval timelines for the precast box culvert, a preliminary design has already been provided to MassDOT Chapter 85 for review and approval. If the Contractor chooses to utilize the specified precast supplier's design for review approval (Concrete Systems, Inc.), the submittal review timeframe should be reduced to only shop drawings. Using a different precast supplier is acceptable but will likely result in a longer review and approval time with Chapter 85. 3. The Contractor shall submit a proposed schedule and logistics plan to the Town and Engineer for review and approval. The hope is that the sequencing of the project, ordering of materials, preparation for site work and actual performance of site work can be done in a manner to minimize the time in which the road is closed to the public Requests for information (RFI) or clarification shall be received by end-of-day Wednesday April 22, 2026 and will be answered in an addendum issued thereafter.