Dare County Granicus #SAW-2025-02129

Dare County Solicits Buxton Groin Repair: PZ-40 Sheet Piling, Armor Stone, and Marine Mattress Installation

Dare County, North Carolina is seeking bids for the Buxton Groin Repair project near the Cape Hatteras Lighthouse, focused on restoring a critical oceanfront structure. - Government Buyer: - Dare County Finance Department, North Carolina - Purchasing Manager: Dustin Peele - Project Scope: - Repair of approximately 640 linear feet of the Buxton Groin - Removal of old debris and metal sheet piling - Installation of up to 390 linear feet of new PZ-40 metal sheet piling - Placement of approximately 6,600 tons of large (10-13 US tons) granite armor stone for the outer structure - Placement of 2,500 tons of smaller (1-2 US tons) granite core stone - Installation of about 22,800 square feet of Triton marine mattress system for scour protection - Pouring of a concrete cap over the new sheet pile (approx. 31 1/8 inches wide, 21 inches deep, 5,000 PSI concrete with FRP rebar) - Products and Materials: - PZ-40 steel sheet piles (OEM: Nucor Skyline or equivalent) - Triton marine mattress system (OEM: Tensar or equivalent) - Granite armor and core stone (no specific OEM, but must meet size and quality requirements) - Concrete and FRP rebar for cap - Services: - Full construction services including mobilization, installation, and demobilization - Engineering survey control and verification of groin sheet placement - Unique/Notable Requirements: - Strict compliance with state and federal environmental permits, including endangered species protection - Coordination with the National Park Service (Cape Hatteras National Seashore) - Mandatory pre-bid conference and site visit - Use of heavy land-based equipment; consideration of weather and tide conditions - Annual monitoring for five years post-construction - Locations: - Place of performance: Buxton Groin Repair Site, near Cape Hatteras Lighthouse, Cape Hatteras National Seashore, Dare County, NC - Contracting office: Dare County Administration Building, Manteo, NC - Pre-bid conference: Fessenden Center, Buxton, NC

Description

This project involves the repair of the Buxton Groin located near the old location of the Cape Hatteras Lighthouse in Buxton, North Carolina. The work includes removal of old debris and metal sheet piling, installation of new PZ-40 metal sheet piling, placement of angular armor stone for core and outer structure, and placement of marine mattress to prevent rock slumping and scouring. The repair will restore approximately 640 linear feet of the groin, with substantial completion expected by December 15, 2026. A mandatory pre-bid conference and site visit are scheduled for May 18, 2026.

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