Avenida Menendez Seawall Rehabilitation

Description

The City of St. Augustine is seeking the services of a qualified and licensed Florida contractor for construction of improvements to the seawall of Avenida Menendez, located south of Bridge of Lions and east of the intersection with Marine Street in St. Augustine, Florida 32084. The Seawall Mitigation portion of the project (precast sheet piles with concrete cap, see COST SCHEDULE under Mitigation, lines 2 and 3) shall be completed no later than September 30, 2025.   This project is currently funded through FEMA’s Hazard Mitigation Grant Program and therefore subject to federal requirements. The construction scope of work shall include elevating and reinforcing a portion of the eastern seawall on the Matanzas River with the installation of approximately 180 linear feet of new concrete seawall in front of the existing riverfront seawall. The existing seawall cap elevation is approximately 5.0 feet (NAVD88). This cap shall be demolished for construction activities. The new seawall cap shall tie the existing wall to the proposed project and shall be constructed to an elevation of 7.1 feet (NAVD88) top of wall. The proposed concrete sheet pile elevations are from +6.1 feet to -22.0 feet with the wall cap reinforcing the top and seaward portions.Additionally, two existing 12-inch diameter polyvinyl chloride (PVC) stormwater outfall pipes shall be retrofitted with 12-inch Ultraflex Checkmate check valves, or an appropriate product determined by the engineer, to adequately protect the infrastructure. Riprap protection is proposed in areas of the seawall hardening and is identified along both the wall improvement length and outfall protection locations. Appropriate transition back to the existing grades are included as well as aluminum