700203 - KOHRS MANNING DIVERSION IMPROVEMENT PROJECT

The State of Montana Natural Resource Damage Program is seeking a qualified contractor to execute the Kohrs Manning Diversion Improvement Project, which entails removal of existing diversion infrastructure and the construction of a new, flood‑resilient water‑delivery system on the Clark Fork River and Cottonwood Creek. The work includes installation of a 12‑ft diameter cone screen, intake structure, debris boom, sluice gate, pipe flume, rock‑ramp, rip‑rap, temporary bypass channels, contaminated‑material removal, and extensive site restoration and vegetative back‑fill. The contract is a public‑works IFB with a 226‑day construction period, mandatory pre‑bid conference, and a 10 % bid‑bond requirement. • Remove existing diversion structures and contaminated soils; install new diversion, intake, cone screen, boom, gate, and pipe flume. • Construct rock‑ramp diversion, rip‑rap banks, brush‑matrix stabilization, and temporary bypass channels for both the Clark Fork River and Cottonwood Creek. • Provide site access improvements, haul‑route/repository planning, and vegetative restoration; comply with Montana prevailing‑wage, 1 % gross‑receipts tax withholding, and extensive environmental permits.