Caltrans 4 (Oakland)
(California Department of Transportation, District 4)
State Route 4 / Main Street-Widening Project
NEG - Negative Declaration
The project is located along SR4/Main Street between Highway 160 and Big Break Road in the City of Oakley, in Contra Costa County. The City proposes to widen SR4/Main Street between southern ramp to Highway 160. Currently the street is a four-lane undivided roadway with two 12-feet wide lanes in each direction separated by a 10 feet median between 160 and Big Break Road. These two lanes in each direct will be widened to 3 lanes each direction each 12 feet in width and 14 feet median separation.
Between State Highway 160 and Big Break Road in Oakley, Antioch
Hwy 4 & 160
Notice of Completion
Review Period Start
Review Period End
Transportation:Local Road (widening Main Street)
Aesthetic/VisualAgricultural LandAir QualityArchaeologic-HistoricBiological ResourcesEconomics/JobsFlood Plain/FloodingGeologic/SeismicMineralsNoisePopulation/Housing BalancePublic ServicesToxic/HazardousTraffic/CirculationVegetationWater QualityWater SupplyWetland/RiparianLand Use
Air Resources Board, Transportation ProjectsCalifornia Department of Fish and Wildlife, Bay Delta Region 3California Department of Parks and RecreationCalifornia Native American Heritage CommissionCentral Valley Flood Protection BoardDelta Protection CommissionDelta Stewardship CouncilDepartment of Toxic Substances ControlDepartment of Water ResourcesOffice of Historic PreservationResources AgencyCalifornia Regional Water Quality Control Board, Central Valley Sacramento Region 5 California Highway Patrol
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