State Route 4 Culvert Replacement
Project Description
The project proposes to rehabilitate 29 existing drainage systems at 29 locations on State Route (SR) 4, 88 and 89 in Alpine County. Existing drainage systems at proposed locations have exceeded design life and have deteriorated or failed. The project work includes replace or rehabilitate existing culverts, and upgrade/replace end treatments and headwalls as needed.
Project Benefits
Purpose
The purpose of this project is to maintain existing drainage systems serviceable by rehabilitating or replacing 29 culverts at various locations in Alpine County that have exceeded their design life and deteriorated or failed.
Need
The Maintenance Engineering Culvert Inspection Team reported that several existing culverts have exceeded their design life and have deteriorated, corroded, and damaged inverts as well as shape loss and joint separation. If these culverts are allowed to continue deteriorating, undermining of the roadways will occur and highways will be compromised.
Current Schedule
Project Study Report (M010)
Fall 2018 (A)
Project Approval & Environmental Document (M200)
Fall 2022 (A)
Right of Way Certification (M410)
Summer 2025 (T)
Ready to List (M460)
Summer 2025 (T)
Approved Construction Contract (M500)
Fall 2025 (T)
Project Completion (M600)
Summer 2027 (T)
Documents
Accessibility Assistance: Caltrans makes every attempt to ensure our documents are accessible. Due to variances between assistive technologies, there may be portions of this document which are not accessible. Where documents cannot be made accessible, we are committed to providing alternative access to the content. Should you need additional assistance, please contact us at (916) 654-2852 or visit https://dot.ca.gov/request-ada-compliant-documents.
Initial Study with Mitigated Negative Declaration - Final - September 2022 (PDF 1.4MB)
Funding Source
201.151 – State Highway Operation and Protection Program (SHOPP) – Drainage System Restoration Program
Project Status
Project currently in Plans, Specifications, and Estimates (PS&E) and Right of Way (R/W) phases.
Project Cost/Programmed (x$1,000):
Programed Project Cost | Capital $ | Support $ |
---|---|---|
Project Approval & Environmental Document | $1,328 | |
Plans, Specifications, & Estimates | $840 | |
Right of Way | $220 | $642 |
Construction | $4,809 | $1,226 |
Projected Cost as of Feburary 04, 2025: | Planned $ | Expended $ |
---|---|---|
Project Approval & Environmental Document | $1,328 | $1,178 |
Plans, Specifications, & Estimates | $1,149 | $1,022 |
Right of Way | $763 | $348 |
Construction | $1,226 | $0 |
Public Information Office

Phone: (209) 948-7977
Email: District10PublicAffairs@dot.ca.gov
Address: P.O. Box 2048, Stockton, CA 95201-2048