CONCRETE CULVERT

The New Hampshire Department of Administrative Services, Division of Procurement and Support Services, is issuing Request for Bid (RFB) 115-26 on behalf of the New Hampshire Department of Transportation for the procurement of one precast concrete box culvert, including shipping and delivery. The culvert is designed for replacement over Folsom Brook on Route 16B in Ossipee, New Hampshire (Project 2022-M303-1), and must measure 5.0 feet wide by 6.0 feet high with 7.0-foot-wide units totaling 42.0 feet in out-to-out dimension. The procurement requires detailed design and fabrication in accordance with Load and Resistance Factored Design (LRFD) methodology, AASHTO LRFD specifications, and New Hampshire-specific technical requirements, including integral cutoff walls, wingwall footings, precast concrete headwalls, mechanical connectors, and watertight joints. Qualified vendors must submit shop drawings stamped and signed by a New Hampshire licensed professional engineer, comprehensive assembly plans, and design calculations prior to fabrication. All precast components must be produced by a single fabricator certified by the Prestressed Concrete Institute Plant Certification Program (Product Group B) or the National Precast Concrete Association, and must comply with Class AAA concrete specifications requiring a minimum 28-day compressive strength of 5,000 psi with corrosion inhibitor additives. Delivery is required within 90 days of purchase order receipt to the NHDOT Mechanical Services Satellite Garage in Center Ossipee, New Hampshire, with a warranty of not less than one year or the manufacturer's standard period covering 100 percent of parts, shipping, labor, and expenses. Bidders must submit questions and clarifications by May 11, 2026, with state responses provided by May 15, 2026, and all bids are due by May 22, 2026, at 2:00 PM Eastern Time, with public opening conducted via Microsoft Teams.

The State of New Hampshire has established no specific set-aside designations or restrictions on respondent eligibility based on disadvantaged enterprise status, though all vendors must be registered to conduct business in New Hampshire, maintain a completed Vendor Application Package, and comply with all state certifications and responsibility requirements prior to award. No incumbent vendors or existing contractors are identified in the solicitation documentation. Bid prices must remain firm for the contract period, be quoted in U.S. dollars with all delivery and ancillary costs included, and be F.O.B. Destination with no additional charges permitted. The State reserves the right to reject any or all bids and award to the vendor providing the lowest cost meeting established criteria; the contract will be a one-time purchase order in non-exclusive form with the State retaining the right to utilize other contractors or make partial awards. Payment will be made via ACH transfer 30 days after invoice receipt or delivery, inspection, and acceptance, whichever is later. While a specific budget or award value is not disclosed in the solicitation, the procurement is for a single specialized precast concrete culvert unit with integrated engineering and fabrication services, with costs expected to reflect the complexity of design, certification requirements, and delivery logistics.