
S-333N Spillway
Design and Construction Support
Location: Miami-Dade County, FL
Owner: South Florida Water Management District
Status: Completed
Construction Cost: $12.6 Million
The Project
The South Florida Water Management District (SFWMD) sought to provide additional operational flexibility and conveyance of flows to Everglades National Park (ENP) by adding a new spillway structure that would work in conjunction with the existing S-333 structure to increase hydraulic connectivity between Water Conservation Area-3A (WCA-3A) and ENP.
SFWMD selected Erdman Anthony to provide design and engineering during construction.
Features/Solutions
The new structure is a fully automated, electrically operated two-gate spillway, with a peak capacity of 1,150 cubic feet per second, that is adjacent to the existing S-333 structure at the intersection of the L-67A and L-29 canals in Miami-Dade County.
The design process included:
• Design calculations, plans, specifications, opinions of probable construction costs, construction schedule, value engineering, and the design for the required submittals (preliminary, final, and corrected final/RTA), in accordance with Everglades Restoration and Capital Projects Engineering Submittal Requirements
• Permitting support and coordination with the US Army Corps of Engineers for impacts to the federal facilities
• Presentations for briefings and meetings with SFWMD’s design review team, and project stakeholders
• Review during the construction phase of documents, progress, and work product
Impacts
The S-333N structure is the first component of the Central Everglades Planning Project (CEPP) to move forward.
CEPP includes a suite of storage, treatment, conveyance, and seepage management measures that will provide the necessary components to deliver additional fresh water south, from Lake Okeechobee to WCA 3, ENP, and Florida Bay. Once CEPP is fully implemented, the project will restore more natural quantity, quality, timing, and distribution of water flows to the remaining portions of the River of Grass.
