Construction Alert:

Heavy Lifting for SR 160/4 Connector Ramps

These giant rebar cages, weighing the equivalent of 70 cars, will form the foundations of SR 160/4 Connector Ramps. See how our crews got them into the ground. Learn more

Photos of Construction Progress

Check out our Media page for some amazing photos of current construction progress. Photos are added regularly, so check back often!

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Why Highway 4?

What do the Highway 4 corridor improvements mean for the people of East County? Watch our video interview with Randy Iwasaki, CCTA Executive Director, to learn more.

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Tweets from @4eastcounty

Eastbound-bridge-at-Sand-Creek-Road_2 Sand Creek Road Completion Celebration

The Contra Costa Transportation Authority and the Streets of Brentwood shopping center are partnering to bring you a discount at Streets of Brentwood stores on Saturday, October 25, to celebrate completion of the Sand Creek Road Bridge and new interchange over Highway 4. More >