OUR PROJECTS / OUR LOCATIONS / SUBCONTRACTOR PREQUALIFICATIONS OUR MARKETS SERVICESABOUT US SAFETY NEWS & MEDIAJOIN OUR TEAM CONTACT US OUR PROJECTS Renewable Energy Power Industrial Electrical Water & Wastewater Transportation Dams CONTACT US ABOUT US Diascund Dam Rehabilitation Newport news, VA This $3.7 million high hazard dam project, designed by Gannett Fleming, was in New Kent County, Virginia where the Diascund Reservoir serves as a 1,110-acre water supply for the City of Newport News. The 250-ft wide principal spillway for the reservoir’s dam needed major reconstruction from the crest down the 80-ft long concrete chute & stilling basin. The City of Newport News first lowered the reservoir level to eliminate flow over the spillway while Crowder installed dewatering well-points to eliminate underground intrusion. This contract also included removal and replacement of two existing 48" x 72" sluice gates at the reservoir’s pump station. The gates could only be accessed on the downstream side of the Pump Station through the 150' long, 10' wide, and 8' high concrete Diversion Outlet that is typically underwater due to tidal influences. A temporary cofferdam was installed at the end of the Diversion Outlet to prevent water from back feeding into the chamber and the upstream side of the gates were sealed to prevent uncontrolled amounts of water exiting the reservoir. A diving team installed steel plate bulkheads at both upstream openings. Crowder removed the existing gates, including the 35' long valve stems with wall brackets. Crowder completed the reinstall of the new gates, leakage testing was successful, divers returned and removed the upstream bulkheads, and the project was complete. READ MORE ABOUT COMMITMENT TO SAFETY Industry-Leading Safety Program OUR MARKETS SERVICES ABOUT US SAFETY NEWS & MEDIA CONTACT US OUR PROJECTS OUR LOCATIONS JOIN OUR TEAM Privacy PolicySitemapEqual Opportunity and Affirmative Action Employer Website by E-dreamz CORPORATE OFFICE (800) 849-2966 or (704) 372-3541 6425 Brookshire Blvd., Charlotte, NC 28216 OUR MARKETS Renewable Energy Power Industrial Electrical Water & Wastewater Transportation Fabrication Dams OUR PROJECTS Diascund Dam Rehabilitation Glenville Lake Dam Rehabilitation Lake Townsend Dam Langley Pond Dam Rehabilitation Table Rock Dam and Intake Structure LATEST NEWS Charlotte-based Crowder Construction and WB Moore Company Named Some of Nation's Safest Construction Companies in 2020 Collaboration and Community Input Puts New Skate Park Above Water Storage Tank in Virginia Beach 2021 Palmetto Shining Star Award Plum Island Wastewater Treatment Plant Improvements Project Wins Build America Award Crowder Featured in ENR Southeast