Boom


Take the Parkway to the Freeway to the Automated Roadway

Publication:
Date: 
May 20, 2016
The past and future of freeway landscapes

California’s freeways—its state highways, urban expressways, and interstates—cumulatively stretch 15,104 miles, end to end. Counting each lane separately, California has 51,326 drivable miles of freeway. Using the standard 12-foot width the state’s Department of Transportation, Caltrans, uses for roadbuilding, California’s freeway system covers roughly 116 square miles. If California’s entire freeway system were stretched out along its 840-mile coastline, it would be sixty-one lanes wide.