Site work for a civil project in Manchester, New Hampshire. Completed plans call for site work for a water / sewer project; and bridge / tunnel.

As of October 29th, 2024, this project is bidding to a list of short-listed contractors. The project is not being publicly bid. If you are interested in getting involved with this project, please reach out to the sources directly. A high-level Scope-of-Work (SoW) is described below to help the Respondent understand the Project requirements. The SoW is not comprehensive but identifies the major elements and includes: 1. Approximately 2.25 miles long, 12-ft internal diameter tunnel; 2. Construction using a pressurized face tunnel boring machine (TBM) with a singlepass, gasketed, and segmental lining; 3. Seven (7) drop shafts, DS-1 through DS-7) that include: a. Vortex structure; b. Drop shaft; c. Deaeration chamber (DS-1, DS-2, and DS-3); d. Adit (DS-1, DS-2, DS-3, DS-4, and DS-6); e. Vent shaft(s); 4. Supplementary vent shafts; 5. Penetration at each drop shaft to connect into the tunnel; 6. Near surface consolidation piping at DS-2 and DS-7; 7. Tapping into existing two (2) large diameter sewer lines at DS-6; 8. Outfall structures that include: a. Transition structure; b. Energy dissipation structure; c. Outfall apron; d. Micropile installation; 9. Inlet structures that include: a. Inlet headwall; b. Box culverts; c. Trash rack; d. Rock trap; 10. TBM launching trench, approximately 30 feet wide by 150 feet long; 11. Ground improvement; 12. Hyperbaric interventions for obstruction removal and/or maintenance Current bonding capacity; bond rating; confirmation that the Respondent is currently bondable for a payment and performance bond for at least 100%. Project Contact: Timothy J. Clougherty Public Works Director, City of Manchester Department of Public Works City of Manchester Department of Public Works, 475 Valley St, Manchester, NH 03103 tclougherty@manchesternh.gov.