State Route 4 Drainage System Restoration
Project Description
The project proposes to rehabilitate existing drainage systems at 34 locations on State Route (SR) 4 and 207 in Alpine County. Existing drainage systems at proposed locations have exceeded design life of 25 to 50 years and have deteriorated or failed. The project scope of work includes replacing or upgrading existing culverts, end treatments, and headwalls as needed.
Vacinity Map
Project Benefits
Purpose
The purpose of this project is to maintain existing drainage system’s serviceability by rehabilitating or replacing culverts at 31 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 need repair or replacement. Many drainage systems have exceeded their design life and have deteriorated, corroded, and experienced damage as well as shape loss and joint separation. If these culverts are allowed to continue to deteriorate, the roadway will be undermined.
Current Schedule
Project Study Report (M010)
06/21/2021(A)
Project Approval & Environmental Document (M200)
Spring 2025 (T)
Right of Way Certification (M410)
Spring 2027 (T)
Ready to List (M460)
Spring 2027(T)
Approved Construction Contract (M500)
Summer 2027 (T)
Project Completion (M600)
Summer 2029 (T)
Documents
Funding Source
This project is proposed for programming into the 2022 State Highway Operations and Protection Program (SHOPP) with funding from the 20.XX.201.151, Drainage System Restoration program in the 2025/26 fiscal year.
Project Status
Project is currently in the Project Approval and Environmental Document (PA&ED) phase.
Project Cost/Programmed (x$1,000):
Programed Project Cost | Capital $ | Support $ |
---|---|---|
Project Approval & Environmental Document | $1,101 | |
Plans, Specifications, & Estimates | $1,184 | |
Right of Way | $2,736 | $588 |
Construction | $9,716 | $1,323 |
Projected Cost as of February 4, 2025: | Planned $ | Expended $ |
---|---|---|
Project Approval & Environmental Document | $1,101 | $1,120 |
Plans, Specifications, & Estimates | $1,184 | $0 |
Right of Way | $588 | $0 |
Construction | $1,323 | $0 |
Public Information Office

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