State Route 4 / Main Street-Widening Project

State Route 4 / Main Street-Widening Project

Note: ND Withdrawn, refer to ND filed by Caltrans on 12/8/11. The project is located along SR4/Main St. between Hwy 160 and Big Break Rd. in Oakley, Contra Costa County, CA. The City plans to expand and widen SR4/Main St. between the southbound ramp to Hwy 160 in Antioch and Big Break Rd., in Oakley. Presently, SR4/Main St. is a four-lane undivided roadway with two 3.6-meter (12-ft) lanes in each direction separated by a 3-meter (10-ft) median between Hwy 160 & Big Break Rd. The median serves as a two-way left turn lane, while 1.5 meter (5 ft. shoulders bind the travel lanes. The City proposes to increase the travel lanes from two lanes in each direction to three lanes in each direction. The travel lanes will be 3.66 meters (12 ft) in width, with a 4.28 meter (14-ft) raised median separating the eastbound and westbound lanes. The shoulders will be 2.44 meters (8 ft. wide on the outside & .61 meters (2ft) wide on the inside.

Oakley

Contra Costa

Air Resources Board, Transportation Projects, California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Parks and Recreation, California Department of Transportation, District 4 (DOT), California Highway Patrol, California Native American Heritage Commission (NAHC), California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB), Delta Protection Commission, Delta Stewardship Council, Department of Water Resources, Resources Agency

Capital Project

Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Drainage/Absorption, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Transportation