KNRI/257081 Knife River Indian Village National H

The National Park Service is seeking contractors for the Knife River Indian Village National Historic Site Elbee Bend Bank Stabilization project, a comprehensive river bank stabilization effort that includes stream channel work, riprap placement, erosion control, and temporary access road construction. This solicitation involves multiple contract line items with the base bid consisting of CLINs 0001-0003, while CLINs 0004 (Topsoil/Erosion Control) and 0005 (Temporary Access Road/River Crossing) are structured as bid alternates, though the agency intends to award all CLINs subject to funding availability. Contractors must demonstrate capability to complete the work within a 365-day performance period while adhering to strict environmental constraints, including avoiding in-water work between April 15 and June 1 to protect fish migration. The evaluation will assess past performance based on recency, relevancy, and quality of previous similar work, with contractors required to submit detailed past performance questionnaires and project experience documentation. Following multiple amendments that provided updated questions and answers from prospective contractors, the final proposal submission deadline is August 6, 2025, at 1:00 PM Mountain Time, with no further questions accepted after July 31, 2025.

This opportunity is designated as a Total Small Business set-aside under NAICS code 237990 (Other Heavy and Civil Engineering Construction), limiting participation to qualified small businesses. The solicitation documents do not identify any current incumbents or specific contract values, though the project involves significant infrastructure work requiring specialized heavy civil engineering construction capabilities. The work must be performed at the Knife River Indian Village National Historic Site in North Dakota, with contractors required to monitor USGS water gauge data for the Knife River and coordinate with the National Park Service to establish a mutually agreeable Notice to Proceed date. Key project requirements include precise river channel construction techniques that minimize environmental impact, completion of stream work within single-day periods to reduce environmental disruption, and the ability to perform winter construction work with appropriate safety mitigation strategies. The contractor will be responsible for all aspects of bank stabilization including excavation, void-filled riprap placement and blending, and restoration activities within the historic site's sensitive environmental setting.