Upper Diversion Weir & Bridge Completion

Upper Diversion before construction

Visitors to Las Vegas Wash (Wash) during recent months may have noticed ongoing construction as crews worked to complete a weir and bridge.  Just upstream of Monson Weir, across from the Nature Preserve, the 11th erosion control project has been taking place.  The Upper Diversion Weir and Bridge project began one summer ago and the project is expected to be completed by of July 11, 2008.  This project also includes a Bypass Channel which will be used in the future to divert flows during maintenance and upcoming construction projects downstream. 

Challenges facing this project included the hard-packed caliche soil which made excavation more difficult.  During an inspection of the bridge supports, gaps in the concrete were found 27 feet below ground.  Cross-hole sonic logging technology enabled this find and helped in forming a strategy to correct it.  Aside from these hurdles construction progressed without incident.

Completed Upper Diversion Weir Bridge

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