(CBS 5) — It used to take months to build a freeway, now Caltrans can get the job done overnight. In this Good Question: What is “road slab” technology, and how does it work?

ANSWER: “Road Slab” technology refers to the installation of precast sections of concrete to repair roadways in the Bay Area. According to Caltrans, the method has also been used in Southern California.

In the East Bay, a 12 mile stretch of Interstate 680 is the largest “road slab” project of its kind in the country. Advantages include not having to wait on concrete to dry before allowing traffic to use the roadway.

(Copyright 2011 by CBS San Francisco. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)


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