District 4 Current Projects
District Wide Projects
- 37 Corridor Projects
- Marin-Sonoma Narrows
- Caldecott Tunnel Bores 1, 2, and 3 Rehabilitation and Ventilation Upgrade
- Transportation Management System (TMS) Performance and Guardrail Installation Project (Various Locations)
- 80 Alameda and Contra Costa Counties Lighting and Concrete Barrier Project
- Vegetation Management Projects
- Roadside Vegetation Management, including Herbicide Spraying
- Drought-Related Tree Removal
- 82 Pedestrian Beacons HAWK System
- Advance Environmental Mitigation (RAMNA)
- The State Route 239 Project
- The Alfred Zampa Memorial Bridge: Celebrating 20 Years of Service over the Carquinez Strait
- The Isleton Bridge: Celebrating 100 Years of Service
- Glossary
Alameda
- 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
- 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
- 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)
- Oakland Alameda Access Project
- Vision 980
Contra Costa
- 80 Pavement Rehabilitation Project
- 242 Northbound Rehabilitation Project Concord
- 580 Richmond-San Rafael Bridge Access Improvements
- 680 & 4 Interchange
Marin
- 1 Capital Preventive Maintenance
- 131 Capital Preventive Maintenance
- Lagunitas Creek Bridge Project
- US-101, State Route 1 Sea-Level Rise Project
- Second Culvert Project on US-101 in Marin City
- Roundabout project at Manuel T. Freitas Parkway/US-101 interchange
- Carpool Hours for Marin-Sonoma Narrows Project
- State Route 37 Petaluma River Bridge Preservation Project
Napa
- 121 Capell Creek Bridge Repair
- 128 Capell Creek Bridge Replacement Project
- Route 29 Paving between St. Helena and Calistoga
- Soscol Junction
- Shrimp, Coir Logs, and Willow Wattles
San Francisco
San Mateo
- 1 Near-term Highway Realignment Project, Pescadero
- 1 Multi-Asset Roadway Rehabilitation Project
- 1 Pilarcitos Creek Bridge Project in Half Moon Bay
- 1 San Gregorio Creek Bridge Project
- 82 El Camino Real Project
- 84 Capital Preventative Maintenance (CAPM)
- 84 – 101 Interchange Reimagined
- 101 Cordilleras Creek Bridge Replacement Project
- 101 Express Lanes
- 101 Pavement Rehabilitation & Median Barrier Upgrade Project
- 101 Managed Lanes North of I-380 Project Website
- 101/92 Interchange Short Term Area Improvements Project
Santa Clara
- 17 Overcrossing Project
- 9 Slide Repair
- 9 Saratoga Creek Bridge
- 87 Roadway Rehabilitation Project (SR-85 to Julian Street Undercrossing)
- 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)
- Caltrans' U.S. 101 Project | Institute For Sustainable Infrastructure
- 87 Soundwall Replacement
- 280 Paving Project
Solano
- Delta Ferry
- Caltrans Delta Region Resource Page
- Solano I-80 Express Lanes
- 12 Roadway Rehabilitation
- 29/Sonoma Boulevard Pavement Rehab and Complete Streets Project
- 37/Fairgrounds Drive Interchange Project (Solano County Transit Authority)
Sonoma
- 101 Hearn Avenue Regional Multimodal Interchange
- Route 12 at Fulton Road Feasibility Study Santa Rosa
- 12 Hooker Creek and Sonoma Creek Bridge Replacement Project
- Route 12 Paving in City of Santa Rosa
- Verano Avenue - Hwy 12 Safety Improvements
- Verano Avenue - Hwy 12 Safety Improvements en Espanol
- 116 Guerneville Pedestrian Upgrades
- 116 Frates Road to Stage Gulch Road Safety Improvements
- 116 Jones Creek Bridge Rebuild near Forestville
- 116/121 Intersection Roundabout
- 116 Roundabout Project in Lakeville - Stage Gulch Road at Lakeville Hwy
- Sebastopol Route 116 Pedestrian Beacons
- Hwy 101 Bridge Railing Replacement Project
- Carpool Hours for the Marin-Sonoma Narrow Project