Austin Road Bridge Scour Mitigation Project

4 Documents in Project


SCH Number
Lead Agency
San Joaquin County
Document Title
Austin Road Bridge Scour Mitigation Project
Document Type
MND - Mitigated Negative Declaration
Present Land Use
Resource Conservation (OS/RC) for the General Plan and General Agriculture (AG Zone) for County Zoning
Document Description
The County proposes to develop a uniform channel section supporting Austin Road Bridge with scour countermeasures to prevent channel degradation of South Littlejohn's Creek. The proposed project will include the following actions: clearing and grubbing along the creek banks; installation of a temporary access ramp and coffer dams, or alternative diversion methods, to access the creek channel during construction while the creek is flowing; excavation of the existing earthen channel bottom and banks to an approximate depth of 4.5 feet; placement of a layer of Caltrans Light Class Rock Slope Protection (RSP) in the excavated channel bottom to conform to the upstream and downstream conditions with staggered concrete baffles to hold the RSP in place; and potential placement of RSP in the form of riprap along the embankment to reduce depths of excavation.

Contact Information

Mark Hopkins
Agency Name
San Joaquin County
Contact Types
Lead/Public Agency


San Joaquin
Cross Streets
Arch Road
Total Acres
State Highways
Hwy 99
North Fork South Littlejohn's Creek

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
Air Resources Board, Transportation Projects, California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Fish and Wildlife, North Central Region 2 (CDFW), California Department of Parks and Recreation, California Department of Transportation, District 10 (DOT), California Highway Patrol, California Native American Heritage Commission (NAHC), California Public Utilities Commission (CPUC), Department of Water Resources, Resources Agency, Central Valley Flood Protection Board, California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB)
State Reviewing Agency Comments
Central Valley Flood Protection Board, California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB)
Development Types
Other (Scour Mitigation)
Project Issues
Biological Resources, Hydrology/Water Quality

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at or via phone at (916) 445-0613.

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