The GIWW West Closure Complex is a $1 billion hurricane storm surge (flood) protection facility for the city of New Orleans and surrounding areas. This Early Contractor Involvement (ECI) contract included one of the world’s largest interior drainage pump stations and one of the nation’s largest navigable floodgates (225 feet). The pump station has 11 units and is capable of discharging storm water at a rate of 19,140 cubic feet per second.
By partnering with the U.S. Army Corps of Engineers, Kiewit finished this project four months ahead of schedule. Phase I involved excavating, blasting and preparing the spillway's foundation. Because blasting occurred beside the existing dam and near a heavily-traveled highway, expertise in controlled blasting and seismic monitoring was essential.
East Dam is one of three dams constructed for the Metropolitan Water District of Southern California's Eastside Reservoir program. Holding more than 260 billion gallons of water, the reservoir doubles Southern California's surface storage capacity. At 180 feet high and 1,200 feet wide at the base, East Dam is the longest of the three dams.
As the primary water source for the Contra Costa Water District, the Los Vaqueros Dam measures 1,000 feet across and 192 feet high. During construction, project personnel suggested a value engineering concept that considered the creation of rip rap from on-site oversized rock from the excavation. This resulted in more than 50,000 cubic yards of rip rap generated on-site.