Welcome to Caltrans District 4
 

Caltrans District 4 | Bay Area Projects

Diseased Tree Removal and Pruning Alameda, Contra Costa, San Francisco, and Santa Clara Counties Map
880 Mission Project Map
880/92 Interchange Map
New Benicia-Martinez Bridge Map
580 Maze Repair (COMPLETED) Map
280 PCC Pavement Replacement and Grinding Project Map
I-238 Widening and Rehabilitation Project Map
Storm Repair - Highway 116 Map
101 East Blithedale Ave Off-Ramp Map
101 Auxiliary Lane Project Map
101/Wilfred Avenue, FWY Widening Project Map
Marin 101 HOV Project, San Rafael Map
Marin Sonoma Narrows Widening Map
Santa Rosa 101 HOV Widening Map
Route 87 Improvements in San Jose (COMPLETED) Map
Route 84 Westbound HOV Lane Extension from Newark Boulevard to I-880 Map
Route 84 Pigeon Pass project Map
New San Francisco Oakland Bay Bridge Map
The West Approach Project Map
Solano County Interstate 80 Pavement Rehabilitation Project Map
New Carquinez Bridge - Alfred Zampa Memorial (COMPLETED) Map
Route 37 Improvements in Solano County (COMPLETED) Map
Highway 24 Rehab Project Map
Caldecott Improvement Project Map
13 Rehabilitation Project (COMPLETED) Map
Route 12 Improvements in Solano County Map
Route 12 Rio Vista Bridge Project
  • COMPLETED
Map
State Route 4 Bypass Windening Map
19th Ave/Route 1 Project Map
Devil's Slide Tunnel Project Map
Highway 1 Closure in Marin County
  • COMPLETED
Map