New Hampshire Statewide Bids and Proposals #115-26

Supply and Installation of Precast Concrete Box Culvert and Components for Ossipee NH16B Project

This opportunity involves the supply and installation of precast concrete box culvert components for a culvert replacement project on NH Route 16B over Folsom Brook in Ossipee, New Hampshire. - Government Buyer: - New Hampshire Department of Administrative Services, Division of Procurement and Support Services - New Hampshire Department of Transportation (NHDOT) - Products and Components Requested: - Precast concrete box culvert sections (totaling 42' out-to-out dimension) - Headwalls, cutoff walls, wing footings, wingwalls - Barrier membrane (peel and stick or heat welded) and protection board - Profile rubber watertight gaskets (ASTM C990 and C1677 compliant) - Silane-siloxane water repellent - Additional precast elements: stairs, work pads - Services Required: - Preparation and submission of detailed shop drawings and calculations, stamped by a New Hampshire licensed professional engineer - Certified fabrication, transportation, and erection of all precast components - Quality assurance inspections and shop drawing approvals - Unique/Notable Requirements: - All precast components must be produced by a certified fabricator (Prestressed Concrete Institute or National Precast Concrete Association certification required) - Compliance with AASHTO LRFD Bridge Design Specifications and NHDOT standards - Minimum 28-day concrete strength of 5,000 psi and use of corrosion inhibitor admixtures for certain elements - Watertight field joints and strict fabrication tolerances - Warranty of at least one year and adherence to environmental and safety standards - No specific OEMs or vendors are named; suppliers must meet certification and engineering requirements - Delivery required to NHDOT Mechanical Services Satellite Garage in Center Ossipee, NH; place of performance is the Ossipee NH16B Box Culvert site

Description

This solicitation is for a concrete culvert project involving the supply and installation of precast concrete box culverts, headwalls, cutoff walls, wing footings, and wingwalls. The project requires detailed shop drawings stamped by a New Hampshire licensed professional engineer and includes specifications for materials, fabrication, transportation, and erection of precast concrete components. The work includes ensuring watertight joints, application of barrier membranes, and compliance with AASHTO LRFD Bridge Design Specifications. The bid closes on May 22, 2026, at 2:00 PM Eastern Time.

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