Contract awarded to repair Oroville Dam spillways
April 18, 2017
• Nebraska firm gets the contract
• $43 Million more than the state’s estimate
Kiewit Infrastructure West Co., headquartered in Omaha, Nebraska, has been awarded the contract to fix the spillways at Oroville Dam.
The company’s bid of $275,443,850 was the lowest of three received for the work.
The Department of Water Resources says its engineer’s estimate for the work was actually $231,715,373. There was apparently a rounding error in the first estimate $220,100,000.
Repairs are scheduled to begin immediately to have the system operational by November 1, the traditional start of the winter rainy season.
The complete recovery or replacement of the spillways will be done in multiple phases “due to the enormity of the project and the time limitations of the construction season,” DWR says. Work has already started on portions of the ‘no regrets’ work like road construction and slope stabilization in and around future work areas, which needs to be completed regardless of the spillway recovery design decisions.
The state refuses to release details of the three bids, contending “they contain design information that … could cause a security risk if released.” Thus the public may never know the real reason why the spillways failed, forcing the two-day evacuation of 180,000 people downstream of the dam.