District 4 Environmental Documents by County

Alameda

Alameda County I-580 Safety Lighting Project

Marin

101 Irwin Creek Culvert Rehabilitation Project

Napa

State Route 29 Sulphur Creek and York Creek Bridge Rail Replacement Project

State Route 29/State Route 221 Soscol Junction Improvement Project

State Route 128 Hopper Slough Bridge Replacement Project

San Mateo

Bridge Seismic Restoration Project: (Alpine Road Undercrossing Bridge, Sand Hill Road Overcrossing Bridges, and Interstate-280/Interstate-380 Separation Bridges)

Solano

State Route 12 Roadway Resurfacing, Restoration and Rehabilitation Project

Sonoma

Sonoma 1 Culvert Rehabilitation Project

State Route (SR) 12 Capital Preventive Maintenance (CAPM) Project



District Wide Projects

State Route 37 Improvement