Construction Manager/General Contractor

The Nampa & Meridian Irrigation District (NMID) is soliciting a Construction Manager/General Contractor (CM/GC) for the Ridenbaugh Canal Diversion Headworks Modernization Project located near Boise, Idaho in Canyon County. The project involves modernizing an aging diversion headworks originally constructed in the 1800s, with critical objectives including demolishing existing infrastructure, installing new automated diversion structures, constructing sediment control features, and implementing modern water delivery technology. Proposals are due by 3:00 p.m. on November 6, 2024, with six printed copies and one USB drive required, and a mandatory site visit was previously held on October 16, 2024. The evaluation of CM/GC proposals will be based on a 100-point scoring system considering factors such as relevant experience, ability to self-perform work, project approach, staff qualifications, and scheduling and budget control capabilities. Potential bidder interviews are tentatively scheduled for November 18-20, 2024, with the project expected to commence construction in 2025 and be completed by 2026 or 2027. The selected CM/GC will be responsible for preconstruction services, procurement, and construction management, utilizing a Guaranteed Maximum Price (GMP) mechanism to control costs.

The project will require expertise in performing in-river construction on irrigation diversion structures, with no specific set-aside designations mentioned in the documentation. The project is funded through a combination of grants, including $3,686,164 from the Idaho Water Resource Board Aging Infrastructure Grant program and the U.S. Bureau of Reclamation WaterSMART: Water and Energy Efficiency Grant program. The total project cost is estimated at $13,388,370, which is approximately four times the grant amount. All construction work packages will be subject to competitive bidding in accordance with Idaho Code, requiring bids from at least three qualified contractors. The CM/GC and its subsidiaries may bid to perform work, provided they hold a valid license and customarily self-perform or supply the specified construction work, materials, or equipment. The owner reserves the right to limit the amount of work the CM/GC can self-perform, and the preconstruction services will involve attending various project meetings, with labor hours to be incorporated into the Not-to-Exceed (NTE) fee estimate.