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Caltrans District 4 | Bay Area Projects
Alameda | Contra Costa | Marin | Napa | San Francisco | San Mateo | Santa Clara | Solano | Sonoma
ROUTE |
ALAMEDA COUNTY | PROJECT LINK | MAP |
| Various | Diseased Tree Removal and Pruning Alameda, Contra Costa, San Francisco, and Santa Clara Counties | ||
| 880 | 880 Mission Project | ||
| 880/92 | 880/92 Interchange | ||
| 680 | I-680 SOUTHBOUND EXPRESS LANE PROJECT (Widening/Rehabilitation/ HOV/HOT) | ||
| 580 | 580 Maze Repair (COMPLETED) | Map | |
| 238 | I-238 Widening and Rehabilitation Project | ||
| 84 | Route 84 Westbound HOV Lane Extension from Newark Boulevard to I-880 | ||
| 84 | Route 84 Pigeon Pass project | ||
| 80 | New San Francisco Oakland Bay Bridge | Map | |
| 13 | 13 Rehabilitation Project (COMPLETED) | ||
ROUTE |
CONTRA COSTA COUNTY | PROJECT LINK | MAP |
| 680 | New Benicia-Martinez Bridge | ||
| 80 | I80 Hilltop Drive Bridge Replacement Project | ||
| 80 | New Carquinez Bridge - Alfred Zampa Memorial (COMPLETED) | ||
| 24 | Highway 24 Rehab Project | ||
| 24 | Caldecott Improvement Project | Map | |
| 4 | State Route 4 Bypass Windening | ||
ROUTE |
MARIN COUNTY | PROJECT LINK | MAP |
| 131 | 131 Resurfacing | ||
| 101 | Marin 101 HOV Project, San Rafael | ||
| 101 | Marin Sonoma Narrows Widening | ||
| 1 | Highway 1 Closure in Marin County |
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ROUTE |
NAPA COUNTY | PROJECT LINK | MAP |
| 121 | 121 in Napa County from Duhig Road to the Sonoma/Napa County line | Map | |
ROUTE |
SAN FRANCISCO COUNTY | PROJECT LINK | MAP |
| 280 | 280 PCC Pavement Replacement and Grinding Project | ||
| 101 | 101 Doyle Drive | ||
| 80 | New San Francisco Oakland Bay Bridge | Map | |
| 80 | The West Approach Project | ||
| 1 | 19th Ave/Route 1 Project | ||
ROUTE |
SAN MATEO COUNTY | PROJECT LINK | MAP |
| 101 | 101 Auxiliary Lane Project | ||
| 1 | Devil's Slide Tunnel Project | ||
ROUTE |
SANTA CLARA COUNTY | PROJECT LINK | MAP |
| 880 | 880 Mission Project | ||
| 680 | I-680 SOUTHBOUND EXPRESS LANE PROJECT (Widening/Rehabilitation/ HOV/HOT) | ||
| 152 | 152 Uvas Creek Bridge | ||
| 87 | Route 87 Improvements in San Jose (COMPLETED) | ||
ROUTE |
SOLANO COUNTY | PROJECT LINK | MAP |
| 37 | Route 37 Improvements in Solano County (COMPLETED) | ||
| 680 | New Benicia-Martinez Bridge | ||
| 80 | Solano County Interstate 80 Pavement Rehabilitation Project | ||
| 37 | 37 Resurfacing | ||
| 12 | Route 12 Improvements in Solano County | ||
| 12 | Route 12 Rio Vista Bridge Project |
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Map |
| ROUTE | SONOMA COUNTY |
PROJECT LINK | MAP |
| 116 | Storm Repair - Highway 116 | ||
| 101 | 101 Windsor HOV | ||
| 101 | 101 East Blithedale Ave Off-Ramp |
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| 101 | 101/Wilfred Avenue, FWY Widening Project | ||
| 101 | Santa Rosa 101 HOV Widening | ||
| 101 | Marin Sonoma Narrows Widening | ||
| 37 | 37 Resurfacing |
