State Route 160, Antioch Bridge Seismic Retrofit Project
5 Documents in Project
Summary
SCH Number
2009062022
Lead Agency
California Department of Transportation, District 4
Document Title
State Route 160, Antioch Bridge Seismic Retrofit Project
Document Type
NOD - Notice of Determination
Received
Posted
10/19/2009
Document Description
Caltrans proposes to seismically retrofit the Antioch Bridge. The bridge features two structural elements: the main structure and the slab san structure. The main structure spans the south shore of the San Joaquin River, and part of Sherman Island. The slab structure starts just north of Mayberry Slough and extends to the northern bridge abutment. The retrofit will include the installation of steel cross bracing between columns to stiffen the superstructure cross frames (Piers 12 to Pier 31), installation of bracing to existing cross frames at the pier caps (Pier 2 to Pier 40), replacement of the existing elastometric bearings with isolation bearings (Abutment 1 to Pier 41), removal of the existing curtain walls, and retrofit of all the columns within the slab spane structure by installing composite fiber jackets (Bent 42 to Abutment 71).
Contact Information
Name
Melissa Escaron
Agency Name
California Department of Fish and Game
Contact Types
Lead/Public Agency
Phone
Location
Cities
Antioch, Oakley
Counties
Contra Costa
Cross Streets
160
Zip
94509
State Highways
160
Waterways
San Joaquin River
Notice of Determination
Approving Agency
DFG
Approving Agency Role
Responsible Agency
Approved On
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
N/A
(4) A mitigation reporting or monitoring plan was adopted for this project
N/A
(5) A Statement of Overriding Considerations was adopted for this project
N/A
(6) Findings were made pursuant to the provisions of CEQA
N/A
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.