Conquering Complex Projects

Oroville Emergency Spillway Recovery Project

Ninyo & Moore provided special inspection and materials testing services for the Oroville Emergency Spillway Recovery project. During the winter rains of 2016 and 2017, the existing spillway had dangerously eroded and been compromised causing a significant hazard for the area residents. Ninyo & Moore provided upwards of 50 lab and field technicians and special inspectors for this major reconstruction project. The project included the observation and documentation of 7,000 drilled anchor locations and involved 1 Million cubic yards of Roller Compacted Concrete (RCC) and 500,000 cubic yards of structural concrete. Two Ninyo & Moore on-site laboratories were mobilized to facilitate adequate and timely testing of the construction materials. In 2020, the DWR was recognized by the American Society of Civil Engineers with the Outstanding Projects and Leaders (OPAL) Award for their efforts on the Oroville Spillways Reconstruction Project.