Willows Road Bridge Scour Project
Summary
SCH Number
2015091006
Lead Agency
San Diego County
Document Title
Willows Road Bridge Scour Project
Document Type
MND - Mitigated Negative Declaration
Received
Present Land Use
Rural Lands 40 (RL-40) and Limited Agriculture (A70)
Document Description
The Willows Road Bridge Scour Project is located in the unincorporated community of the Willows, east of Alpine and west of the Viejas Indian Reservation, in eastern San Diego County. The Willows Road Bridge is located where Viejas Creek flows under Willows Road (Thomas Bros. Page 1234 H5). The County proposes improvements to prevent scour from occurring under the footings for the Willow Road Bridge. Hydraulic and scour evaluations indicate that a 100-year flood event would scour the existing footings for the bridge, several of which are known to be located between 1 and 12 feet above non-scourable bedrock. These footings are therefore susceptible to scour below the footings, which could undermine the integrity of the bridge. The proposed project includes two methods to protect the piers at bents 3 through 9. During construction, a temporary road would be created so that construction vehicles can access the underside of the bridge. This road would be to the immediate north of the bridge from Willows Road. Construction is expected to take approximately 7 months. The ground beneath the bridge will be recontoured and revegetated with native species after construction.
Contact Information
Name
Thomas Duffy
Agency Name
San Diego County
Contact Types
Lead/Public Agency
Phone
Location
Coordinates
Counties
San Diego
Cross Streets
Viejas Grade Road and Willows Road
Zip
91901
Total Acres
.83
State Highways
I-8
Waterways
Viejas Creek
Other Location Info
Alpine
Notice of Completion
State Review Period Start
State Review Period End
State Reviewing Agencies
Air Resources Board, Transportation Projects, California Department of Fish and Wildlife, South Coast Region 5 (CDFW), California Department of Parks and Recreation, California Department of Transportation, District 11 (DOT), California Highway Patrol, California Native American Heritage Commission (NAHC), California Regional Water Quality Control Board, San Diego Region 9 (RWQCB), Department of Water Resources, Resources Agency
Development Types
Transportation:Other (Bridge footing repair)
Project Issues
Biological Resources
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 state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.