State Route (SR) 242 / Clayton Road Ramps Project

4 Documents in Project


SCH Number
Lead Agency
California Department of Transportation, District 4
Document Title
State Route (SR) 242 / Clayton Road Ramps Project
Document Type
FON - FONSI - Findings of No Significant Impact
Document Description
Note: Notice of Availability The SR 242/Clayton Rd Ramps project would modify the existing partial interchanges at Clayton Rd and Concord Ave. The SR 242/Clayton Rd interchange would be reconfigured from a partial interchange to provide new northbound and southbound SR 242 on and off ramps. Proposed local roadway improvements include a combination of additional travel lanes and the extension of left turn pockets on Willow Pass Rd, Concord Ave, Franquette Ave, Clayton Rd, Market St, and Commerce Ave. The purpose of the project is to reduce congestion and improve traffic operations at the SR 242/Clayton Rd and SR 242/Concord Ave interchanges, thereby enhancing mobility in the area, and improving accessibility to key local destination including the Concord CBD and the Concord BART station.

Contact Information

Melissa Coppola
Agency Name
California Department of Transportation, District 4
Contact Types
Lead/Public Agency


Contra Costa
Cross Streets
SR 242 / Concord Ave
State Highways
4, SR 242, I 680
Buchanan Field
Mt. Diablo HS
Walnut Creek, Pine Creek

Notice of Completion

Development Types
Transportation:Other (interchange improvement)
Project Issues
Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Flood Plain/Flooding, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Noise, Public Services, Recreation, Transportation, Vegetation, Wetland/Riparian

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at or via phone at (916) 445-0613.

Download CSV New Search Print