Alameda Creek Bridge Scour Mitigation Project (04-0P910) (Lake or Streambed Alteration Agreement No. EPIMS ALA-54540-R3)
5 Documents in Project
Summary
SCH Number
2022100088
Lead Agency
California Department of Transportation, District 4
(DOT)
Document Title
Alameda Creek Bridge Scour Mitigation Project (04-0P910) (Lake or Streambed Alteration Agreement No. EPIMS ALA-54540-R3)
Document Type
NOD - Notice of Determination
Received
Posted
11/17/2025
Document Description
The California Department of Fish and Wildlife (CDFW) has executed Lake and Streambed Alteration Agreement (EPIMS-ALA-54540-R3), pursuant to Fish and Game Code section 1602, the project Applicant, California Department of Transportation.
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 five 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. The expansion joints will be cleaned, and the seals replaced. Slip forming paving machines will lay out threequarter inches of polyester concrete on the bridge deck. The maximum depth of ground disturbance below the existing pavement will not exceed two inches. Median barriers on the approach slabs will be removed and replaced. All removed asphalt and concrete will be taken off-site and disposed of in an approved facility.
Contact Information
Name
Karen Taylor
Agency Name
CA Department of Fish and Wildlife
Job Title
Senior Environmental Scientist (Specialist)
Contact Types
Responsible Agency
Phone
Name
Julian Smith
Agency Name
CA Dept of Transportation
Job Title
Lead Agency Contact
Contact Types
Lead/Public Agency
Phone
Email
Location
Coordinates
Counties
Alameda
Regions
San Francisco Bay Area
Other Location Info
The I-680 Alameda Creek Bridge Scour Mitigation Project is located on I-680 at Alameda Creek Bridge (Bridge # 33 0047) at PM R10.15, approximately 0.75 miles southwest of the I-680 junction with SR 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 Mitigated Negative Declaration prepared for the project is available to the general public at the office location listed above for the Lead Agency. CDFW’s record of project approval as a Responsible Agency is available 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
Disclaimer: The Governor’s Office of Land Use and Climate Innovation (LCI) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. For more information, please visit LCI’s Accessibility Site.