District 4 Current Projects

• The Alfred Zampa Memorial Bridge: Celebrating 20 Years of Service over the Carquinez Strait
• The Isleton Bridge: Celebrating 100 Years of Service

District Wide Projects

• 37 Corridor Projects
• Marin-Sonoma Narrows
• 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
• Glossary

Alameda

• 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
• 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
• Various Locations Crosswalk and Ramp Restriping 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
• 101 NB Central San Rafael Harbor Bridge Replacement
• 101 Richardson Bay Bridge
• 131 Capital Preventive Maintenance
• Lagunitas Creek Bridge Project
• US-101, State Route 1 Sea-Level Rise Project

Napa

• 121 Capell Creek Bridge Repair
• 128 Capell Creek Bridge Replacement Project
• Route 29 Paving between St. Helena and Calistoga
• Hopper Slough Bridge
• Soscol Junction
• Shrimp, Coir Logs, and Willow Wattles

San Francisco

• New Eastbound Ramp from Bay Bridge to Yerba Buena Island
• State Route 1 Safety and Roadway Improvement Project
• 19th Avenue (CA Route 1) Combined City Project (Non-Caltrans Project) 
• 101 Doyle Drive / Presidio Parkway
• Bay Bridge Info.org
• Van Ness Improvement Project (Non-Caltrans Project)
• Yerba Buena Island I-80 Interchange Improvement Project
• Farallones Avenue Overcrossing
• Skyline-Great Highway Intersection Project

San Mateo

• 82 El Camino Real Project
• 84 Emergency Storm Damage Repair Project
• 84 Capital Preventative Maintenance (CAPM)
• 92 Sinkhole Repair Project
• 101 Cordilleras Creek Bridge Replacement Project
• 101 Express Lanes
• 101/92 Short-Term Interchange Improvements Project
• Caltrans' U.S. 101 Project | Institute For Sustainable Infrastructure
• Safety Enhancement Project on State Route 82 (El Camino Real)

Santa Clara

• 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)
• 101 Moffett Boulevard Overcrossing
• Caltrans' U.S. 101 Project | Institute For Sustainable Infrastructure

Solano

• Delta Ferry
• 80/SR 29 Bridge Replacement Project Vallejo
• 80 Six Bridges
• 80 680 12 Interchange
• Solano I-80 Express Lanes

Sonoma

• 1 Gleason Beach Realignment
• 101 Hearn Avenue Regional Multimodal Interchange
• 12 Hooker Creek and Sonoma Creek Bridge Replacement Project
• Route 12 Paving in City of Santa Rosa
• 116 Guerneville Pedestrian Upgrades
• 116 Frates Road to Stage Gulch Road Safety Improvements
• Verano Avenue - Hwy 12 Safety Improvements
• Verano Avenue - Hwy 12 Safety Improvements en Espanol
• 116/121 Intersection Roundabout
• 116 Roundabout Project in Lakeville - Stage Gulch Road at Lakeville Hwy