District 4 Current Projects
District Wide Projects
Alameda
Read the Alameda County Newsletter
- 80 Alameda and Contra Costa Counties Lighting and Concrete Barrier Project
- 80 Gilman Interchange Improvement Project
- 84 Arroyo De La Laguna Bridge Project
- 84 Niles Canyon Safety and Improvement Project
- 84 Expressway Widening and State Route 84/I-680 Interchange Improvements Project
- 84 Barrier Project
- 84 Eastbound Dumbarton Bridge Paving
- 580 Truck Access Study
- 580 East and Westbound Rehabilitation Project
- 580 & 680 Alameda County Express Lanes
- 680 Express Lanes between Milpitas and Pleasanton
- 680 Corridor Improvements in Alameda County
- 680 Paving Project
- 680 & 238 Separation Bridge Rehabilitation Project
- 880 Capital Preventive Maintenance
- 880 Washington Ave Ramps Reconstruction
- 880 Interchange Improvements (Winton Avenue and A Street)
- 880 Interchange Improvements (Whipple Road/Industrial Parkway Southwest and Industrial Parkway West)
- Caldecott Tunnel Bores 1, 2, and 3 Rehabilitation and Ventilation Upgrade
- Oakland Alameda Access Project
- State Route 239 Project
- Vision 980
Contra Costa
Read the Contra Costa County Newsletter
- 80 Alameda and Contra Costa Counties Lighting and Concrete Barrier Project
- 80 Pavement Rehabilitation Project
- 242 Northbound Rehabilitation Project Concord
- 580 Richmond-San Rafael Bridge Access Improvements
- 680 & 4 Interchange
- Caldecott Tunnel Bores 1, 2, and 3 Rehabilitation and Ventilation Upgrade
- Richmond - San Rafael Bridge
- State Route 239 Project
- The Alfred Zampa Memorial Bridge: Celebrating 20 Years of Service over the Carquinez Strait
Marin
Read the Marin County Newsletter
- 1 Capital Preventive Maintenance
- 37 Corridor Projects
- 37 Petaluma River Bridge Preservation Project
- 101 Second Culvert Project in Marin City
- 101 & SR-1 Sea-Level Rise Project
- 131 Capital Preventive Maintenance
- Lagunitas Creek Bridge Project
- Marin 101 Adaptation Planning Feasibility Study
- Marin-Sonoma Narrows
- Richmond - San Rafael Bridge
- Roundabout project at Manuel T. Freitas Parkway/US-101 interchange
Napa
San Francisco
San Mateo
Read the San Mateo County Newsletter
- 1 Multi-Asset Roadway Rehabilitation Project
- 1 Pescadero Realignment Project
- 1 Pilarcitos Creek Bridge Project in Half Moon Bay
- 1 San Gregorio Creek Bridge Project
- 82 El Camino Real Project
- 82 Pedestrian Beacons HAWK System
- 84 Capital Preventative Maintenance (CAPM)
- 84 – 101 Interchange Reimagined
- 101/92 Interchange Short Term Area Improvements Project
- 101 Express Lanes
- 101 Managed Lanes North of I-380 Project Website
Santa Clara
Read the Santa Clara County Newsletter
- 9 Saratoga Creek Bridge
- 9 Slide Repair
- 17 Overcrossing Project
- 17 Roadway Improvement Project
- 82 El Camino Real Pavement Rehabilitation and ADA Improvements (0.5 mile north of SR-237 to Sand Hill Road)
- 82 El Camino Real Pavement Rehabilitation Project (McKendrie Street to El Camino Real. Post Mile 9.8/R10.4)
- 82 Pedestrian Beacons HAWK System
- 87 Roadway Rehabilitation Project (SR-85 to Julian Street Undercrossing)
- 87 Soundwall Replacement
- 280 Paving Project
- Caltrans' U.S. 101 Project | Institute For Sustainable Infrastructure
- State Route 25 Safety Improvement Projects
Solano
Read the Solano County Newsletter
- 12 Roadway Rehabilitation
- 29/Sonoma Boulevard Pavement Rehab and Complete Streets Project
- 37 Corridor Projects
- 37/Fairgrounds Drive Interchange Project (Solano County Transit Authority)
- Caltrans Delta Region Resource Page
- Cordelia Truck Scales Improvement Project
- Delta Ferry
- Solano I-80 Express Lanes
- The Alfred Zampa Memorial Bridge: Celebrating 20 Years of Service over the Carquinez Strait
- The Isleton Bridge: Celebrating 100 Years of Service
Sonoma
Read the Sonoma County Newsletter
- 1 Rumble Strip and Bike Pull-outs
- 1 Slide Repair in Bodega Bay
- 12 Fulton Road Feasibility Study Santa Rosa
- 12 Hooker Creek and Sonoma Creek Bridge Replacement Project
- 12 Paving in City of Santa Rosa
- 12/Verano Avenue Safety Improvements
- 37 Corridor Projects
- 101 Bridge Railing Replacement Project
- 101 Carpool Hours for the Marin-Sonoma Narrow Project
- 101 Hearn Avenue Regional Multimodal Interchange
- 101 Marin-Sonoma Narrows
- 116 Forestville to Sebastopol Paving Project
- 116/121 Intersection Roundabout
- 116 Frates Road to Stage Gulch Road Safety Improvements
- 116/Green Valley Road Intersection Upgrade
- 116 Guerneville Pedestrian Upgrades
- 116 Jones Creek Bridge Rebuild near Forestville
- 116 Landslide West of Monte Rio
- 116 Roundabout Project in Lakeville - Stage Gulch Road at Lakeville Hwy
- 116 Sebastopol Pedestrian Beacons
- 116 Slide Repair near Guerneville
- 116 Slide Repair/Retaining Wall in Monte Rio
- 121 Arroyo Seco and Yellow Creek Bridge Rail Replacement in Schellville
- 128 Slide Repair between Geyserville and Calistoga
- 128 Pavement Repair Project between Geyserville and Calistoga