Watercourse Crossing Modification

This subcontract for Watercourse Crossing Modification involves the physical modification of Class I, II, and III watercourses within Mendocino County. Working for prime contractors on CDFW streambed alteration projects, the provider is responsible for installing culverts, bridging, and ford construction, as well as performing stream diversion, bed stabilization, and road crossing reconfiguration. The scope of work requires the use of heavy machinery such as excavators and loaders, along with materials including HDPE or steel culvert piping, riprap, and geotextiles to deliver modified road crossings. The project must be executed in strict compliance with the California Fish and Game Code and the specific requirements of THP 1-25-00121-MEN. Managed under the Department of California Forestry and Fire Protection, the contract falls under NAICS code 237310 and was posted on July 14, 2026.