Maintenance of Way Tunnel at Hillcrest Avenue BART
East Contra Costa County, CA

Maintenance of Way Tunnel at Hillcrest Avenue Bay Area Rapid Transit District,
East Contra Costa County, CA

We provided final PS&E for over 1,000 feet of retaining walls and a buried 300-long-long single-cell concrete box structure (tunnel) in the median and under SR4 at Hillcrest Avenue, respectively.