A completed CIDH (Cast-In-Drill-Hole) structural foundation for an express lane sign placed in the future reconstructed median barrier of I-680.
Not labeled for reuse. All rights reserved.
Construction crews use an excavator in pre-drilling activities for express lane sign foundations.
Not labeled for reuse. All rights reserved.
Construction crews use an excavator in pre-drilling activities for express lane sign foundations.
Not labeled for reuse. All rights reserved.
Construction crews unload a pre-fabricated metal rebar cage. This cage reinforces the foundations once concrete is poured.
Not labeled for reuse. All rights reserved.
Drill attachment pushes through the earth to pre-drill shafts for the express lane sign foundations.
Not labeled for reuse. All rights reserved.
A crane picks up a pre-fabricated rebar cage to place in the pre-drilled shaft to reinforce the concrete for the express lane sign foundations.
Not labeled for reuse. All rights reserved.
A view through a pre-fabricated rebar cage as crews prepare to lift it with a crane.
Not labeled for reuse. All rights reserved.
Traffic controlled lane closures off of Crow Canyon Rd. on I-680
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A crane places the metal rebar cage into the pre-drilled shaft before concrete is poured.
Not labeled for reuse. All rights reserved.
An excavator with a drill attachment pre-drills a shaft where metal rebar cages and concrete will be placed.
Not labeled for reuse. All rights reserved.
Construction is well under way on the first Bay Area Express Lane project to be planned, built and operated by MTC. This project is converting existing high-occupancy vehicle (HOV) lanes to Express Lanes on Interstate 680 through Contra Costa County. Read more.