Eureka Hill Road over The Garcia River Seismic Retrofit Project

2 Documents in Project

Summary

SCH Number
2014062041
Lead Agency
Mendocino County
Document Title
Eureka Hill Road over The Garcia River Seismic Retrofit Project
Document Type
NOD - Notice of Determination
Received

Document Description
The proposed project includes seismic retrofits of the Eureka Hill Road Bridge (No. 10C-0034) over the Garcia River in Mendocino County. The proposed improvements would strengthen the structural components to resist seismic loads on the structure & loads imposed by the soil movement. Support is provided at the ends of the superstructure near the abutments. The retrofit work would involve the following activities within or adjacent to the Garcia River: 1) constructing a temporary clear water crossing (temporary work pad) beneath the bridge with temporary culverts to maintain flow & fish passage through the site as well as providing construction access to piers; 2) excavating, driving piles, and constructing top mats to reinforce the bent foundations around piers 2, 3, and 4; and 3) revegetating temporarily disturbed riparian areas. Retrofitting of the bridge abutments (i.e., excavating, constructing two 72-inch Cast-In-Drilled-Hole (CIDH) piles at each bridge abutments, and constructing concrete girders between the CIDH pile groups and bumpers to the superstructure soffit would occur outside of the channel. In order to complete the needed seismic retrofit work, it is likely that the Eureka Hill Road Bridge would be limited to one lane traffic control through the project site for some construction activities, including drilling CIDH piles. Limited east-west connections exist between State Routes 1 and 128, and closing Eureka Hill Road and detouring traffic would result in a 125-mile detour around the project site. Two areas (one on each side of the Garcia River) north of the bridge are available for potential construction staging areas. All in-channel work would occur between June 15 and October 15.

Contact Information
Howard N. Dashiell
Mendocino County Department of Transportation
340 Lake Mendocino Drive
Ukiah, CA 95482

707-463-4079

Location

Coordinates
38°54'12.08"N 123°36'27.22"W
Cities
Point Arena
Counties
Mendocino
Cross Streets
Eureka Hill Road, Hay Ranch Road
Zip
95468
Total Acres
18.6
Waterways
Garcia River
Township
12N
Range
16W
Section
14
Base
MDB&M

Notice of Determination

Approving Agency
Mendocino County Board of Supervisors
Approving Agency Role
Lead Agency
Approved On
Final EIR Available Location
340 Lake Mendocino Drive, Ukiah, CA 95482

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 Negative Declaration was prepared for this project pursuant to the provisions of CEQA
Yes
(3) Mitigated measures were made a condition of the approval of the project
Yes
(4) A Statement of Overriding Considerations was adopted for this project
No
(5) Findings were made pursuant to the provisions of CEQA
Yes
Download CSV New Search