Minor Alteration No. WA2026103– Milepost 239.83 Bridge Repair Project

The Minor Alteration No. WA2026103 Milepost 239.83 Bridge Repair Project, managed by the Central Valley Flood Protection Board in California, involves critical structural repairs to a single-track, nine-span railroad bridge constructed in 1983. The primary scope of work focuses on repairing scour damage to the footer of pier 6 by installing sheet-pile forms around the 8-foot by 22-foot structure and backfilling the scour hole with controlled low strength material. Additionally, the project requires the removal of two abandoned piers and their associated sheet-pile cofferdams, each measuring approximately 12 feet by 24 feet, to a depth of three feet below the natural groundline within the Cottonwood Creek Channel. Located across Shasta and Tehama Counties, the project will conclude with the restoration of the surrounding area to its pre-construction contours. This effort is authorized under Board Permit No. 13563 and has been granted a Notice of Exemption from the California Environmental Quality Act under statutory exemption 15275(a) and categorical exemptions 15301 and 15302. The project was posted as a forecast on September 28, 2026, with coordination involving the Central Valley Flood Protection Board and structural design management.