Russian River Bank Stabilization at Highway 128 Bridge
- SCH Number
- Public Agency
- Regional Water Quality Control Board, Region 1 (North Coast), Santa Rosa
- Document Title
- Russian River Bank Stabilization at Highway 128 Bridge
- Document Type
- NOE - Notice of Exemption
- Document Description
- Caltrans replaced the Highway 128 Bridge over the Russian River in 2006 after one of the bridge piers failed. The bridge was closed from January 2006 through August 2006 during emergency bridge replacement/reconstruction. In January 2010, Caltrans completed an emergency bank stabilization project along the upstream side of the western approach to the new bridge that consisted of placing approximately 500 cubic yards of rock slope protection (RSP) streambank during high winter flows. An additional 2,000 cubic yards of RSP was placed on the top of the eroding bank and against the bridge approach fill as an erodible buttress in the event that the 500 cubic yards that were placed in the river was insufficient to prevent further erosion. The eroding bank migrated approximately 65 feet over the last two years. Stabilization of the eroding streambank was performed in the summer of 2010. High flows during the 2010/2011 wet season cause additional erosion to the repaired bank; therefore, additional work on the eroded bank is necessary to maintain the integrity of the bank and protect the highway. The primary purpose of this project is to prevent additional westward migration of the eroding streambank in order to protect Highway 128 and to prevent and mitigated an emergency situation.
- Contact Information
Regional Water Quality Control Board, Region 1 (North Coast)
5550 Skylane Boulevard, Suite A
Santa Rosa, CA 95403
Phone : (707) 576-2835
- Other Location Info
- City/Nearest Community: Geyserville
Notice of Exemption
- Exempt Status
- Emergency Project
- Type, Section or Code
- Reasons for Exemption
- The project invovles specific actions necessary to prevent and mitigate an emergency situation that has a high probability of occurence in the short-term.
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