I-680 Alameda Creek Bridge Scour Mitigation Project (04-0P910) [California Endangered Species Act (CESA) Incidental Take Permit No. 2081-2024-072-03 (ITP)]
4 Documents in Project
Summary
SCH Number
2022100088
Lead Agency
California Department of Transportation, District 4
(DOT)
Document Title
I-680 Alameda Creek Bridge Scour Mitigation Project (04-0P910) [California Endangered Species Act (CESA) Incidental Take Permit No. 2081-2024-072-03 (ITP)]
Document Type
NOD - Notice of Determination
Received
Posted
10/23/2025
Document Description
The Project will repair scour on the leading edges of Piers 8 and 9 due to restricted flows from the surrounding mining operation. The eroded area, around and between Pier 8 and 9, is approximately 40 feet wide, up to 5 feet deep, and 27 feet long; depth varies according to silt deposition from winter storms. However, silt is not adequately stable to maintain bridge stability. Excavation and placement of the shot rock (rock slope protection (RSP) will be needed in the scour hole and around the upstream edges of Piers 7, 8 and 9. The Project will also rehabilitate the bridge deck by cold planning and removing 1.5 inches of polymer concrete of the bridge deck in both directions.
Impacts to California tiger salamander (Ambystoma californiense, CTS) habitat include 0 acres of permanent impacts and 1.009 acres of temporary impacts to grassland, burrow refugia, and dispersal habitat. The project is expected to result in incidental take of the CTS, designated as a threatened species under CESA. The ITP referenced above as issued by CDFW authorizes incidental take of species listed under CESA that may occur as a result of Project implementation.
Contact Information
Name
Karen Taylor
Agency Name
CA Department of Fish and Wildlife
Job Title
Environmental Scientist
Contact Types
Responsible Agency
Phone
Name
Juliane Smith
Agency Name
California Department of Transportation
Job Title
Lead Agency Contact
Contact Types
Lead/Public Agency
Address
Phone
Email
Location
Counties
Alameda
Regions
San Francisco Bay Area
Other Location Info
The Project is located on Interstate 680 (I-680) at Alameda Creek Bridge (Bridge # 33 0047) at PM R10.15, approximately 0.75 miles southwest of the I-680 junction with State Route 84 in within an unincorporated area of Sunol, Alameda County, California. The Project is located in the Niles U.S. Geological Survey (USGS) 7.5-minute topographic quadrangle (quad) at latitude 37.577989, longitude -121.877368.
Notice of Determination
Approving Agency
CA Department of Fish and Wildlife
Approving Agency Role
Responsible Agency
Approved On
County Clerk
Alameda
Final Environmental Document Available at
The Negative Declaration prepared by the lead agency for the Project is available to the general public at the office location listed above for the lead agency. CDFW’s administrative record of proceedings related to the incidental take permit is available to the public for review at CDFW’s regional office.
Determinations
(1) The project will have a significant impact on the environment
No
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
No
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
Yes
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
No
(3) Mitigated measures were made a condition of the approval of the project
Yes
(4) A mitigation reporting or monitoring plan was adopted for this project
Yes
(5) A Statement of Overriding Considerations was adopted for this project
No
(6) Findings were made pursuant to the provisions of CEQA
No
Attachments
Notice of Determination
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