The U.S. Army Corps of Engineers, Portland District (Corps) has conducted an environmental analysis in accordance with the National Environmental Policy Act of 1969, as amended. The final Integrated Feasibility Report and Environmental Assessment (IFR-EA), dated April 2025, for the Columbia River Turning Basin Improvements Project investigates navigational improvements to the LCR FNC from the Port of Longview (RM 64) through the Lower Martin Bar area (RM 77). This reach of the system is impacted by heavy congestion, shoaling, and transportation delays waiting for available berths. This project is needed to improve safety, reduce draft restrictions, increase efficiency by maximizing capacity, and meet the navigation needs of the Columbia River system users. The final recommendation is contained in the Report of the Chief of Engineers, Columbia River Turning Basins Navigation Improvements, Washington & Oregon, dated 26 September 2025.
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