District 4 Environmental Documents by County

Alameda

Alameda County I-580 Safety Lighting Project

Napa

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

State Route 29/State Route 221 Soscol Junction Improvement 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


District Wide Projects

State Route 37 Improvement