Minor Alteration No. WA2025066 – Liberty Island Road Bridge over Shag Slough Removal Project
12 Documents in Project
Summary
SCH Number
2019039136
Lead Agency
California Department of Water Resources
(DWR)
Document Title
Minor Alteration No. WA2025066 – Liberty Island Road Bridge over Shag Slough Removal Project
Document Type
NOD - Notice of Determination
Received
Posted
3/5/2026
Document Description
Approval of Minor Alteration No. WA2025066, under California Code of Regulations, Title 23, Article 3, Section 6, for work within an adopted plan of flood control: To remove the Liberty Island Road Bridge by obliterating the roadway base and surfacing; removing signs, guardrails, gates; the eastern portion of the bridge, and the western portion of the Bridge; hydroseeding the excavated portions of the roadways; and restoring the areas of proposed work to the conditions that existed prior to the construction of the bridge. Removal of the eastern and western portions of the bridge includes: constructing temporary support falsework and protective covers where demolition is to take place as needed; removing the existing bridge barriers and railings; removing the bridge deck; removing falsework and protective cover where the bridge deck has been removed over the entire span completely removing abutment caps and wingwalls; and completely removing the bent piles or to a minimum depth of three feet below existing grade. The site will only be accessible via Shag Slough. Equipment may be barge-mounted or transported via barge to the Bridge or staging areas.
Contact Information
Name
Jordan Robbins
Agency Name
Central Valley Flood Protection Board
Job Title
Senior Environmental Scientist
Contact Types
Responsible Agency
Phone
Name
Matt Tuggle
Agency Name
Solano County
Job Title
Engineering Manager
Contact Types
Project Applicant
Phone
Name
Dan Riordan
Agency Name
Department of Water Resources
Job Title
Tidal Habitat Restoration Section Manager
Contact Types
Lead/Public Agency
Phone
Email
Location
Coordinates
Cities
Unincorporated
Counties
Solano
Regions
Northern California
Waterways
Shag Slough
Other Location Info
The project is located in Shag Slough in Solano County at approximate coordinates of 38.30652°N, 121.69296°W.
Notice of Determination
Approving Agency
Central Valley Flood Protection Board
Approving Agency Role
Responsible Agency
Approved On
County Clerk
Solano
Final Environmental Document Available at
The EIR, prepared by the lead agency for the project, is available to the general public at the lead agency’s office listed above. The Board’s administrative record related to the Board authorization is available for public review at the Board’s 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
Yes
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
No
(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
No
(4) A mitigation reporting or monitoring plan was adopted for this project
No
(5) A Statement of Overriding Considerations was adopted for this project
No
(6) Findings were made pursuant to the provisions of CEQA
Yes
Attachments
Notice of Determination
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