Lower Las Vegas Wash Stabilization Program-Weir 5

The Lower Las Vegas Wash (the section of the Wash between Lake Las Vegas and Lake Mead) has experienced significant erosive forces that have caused head-cutting of the wash and has resulted in dangerously unstable cliffs, and if left unchecked may eventually threaten the Northshore Road bridge. This portion of the Wash carries storm water runoff, treated effluent, and urban runoff from the Las Vegas Valley and discharges it into Lake Mead. In response to the erosion of the Wash, the Southern Nevada Water Authority (SNWA) has developed a program to stabilize this section of the Wash. The stabilization program will construct grade control structures, access roads, drainage improvements, and stabilize channel banks within the Wash. SNWA has identified 4 existing weirs within the Wash that need rehabilitation and/or replacement and an additional 6 weirs to be constructed for the lower portion of the Wash. SNWA is using the CMAR delivery method to design and construct these Wash stabilization improvements. Innovative Contracting and Engineering is providing the Independent Cost Estimating services, including providing production-based cost estimates, developing independent construction schedules, participating in risk management and constructability reviews, and providing overall consulting on the implementation of CMAR “best practices”.