Section 401 Water Quality Certification Public Notice

The San Francisco Regional Water Quality Control Board is currently reviewing an application for the following project for water quality certification under Section 401 of the Clean Water Act. We encourage public comments on the proposed work, which will be considered in the decision on certification. You may submit comments on this project to the staff member below.

Project Name: Sm -101 Redwood Creek Bridge No. .0145 Repair Project
City/County: Redwood City, San Mateo County
Comment Period: 11/24/2025 - 12/15/2025
Project Description: The California Department of Transportation (Caltrans) District 4 proposes to repair damaged bridge columns, abutments, bent caps, and soffits for the San Mateo U.S Highway 101 (SM-101) Redwood Creek Bridge No. 0145 Repair Project (Proposed Action) to prevent further bridge deterioration.
Project Files: Contact Staff for files
Staff Contact: Qi Yan
(510) 622-2329
Water Quality Control Board
1515 Clay Street, Ste 1400
Oakland, CA 94612