A completed CIDH (Cast-In-Drill-Hole) structural foundation for an express lane sign placed in the future reconstructed median barrier of I-680.
Construction crews use an excavator in pre-drilling activities for express lane sign foundations.
Construction crews use an excavator in pre-drilling activities for express lane sign foundations.
Construction crews unload a pre-fabricated metal rebar cage. This cage reinforces the foundations once concrete is poured.
Drill attachment pushes through the earth to pre-drill shafts for the express lane sign foundations.
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.
A view through a pre-fabricated rebar cage as crews prepare to lift it with a crane.
Traffic controlled lane closures off of Crow Canyon Rd. on I-680
A crane places the metal rebar cage into the pre-drilled shaft before concrete is poured.
An excavator with a drill attachment pre-drills a shaft where metal rebar cages and concrete will be placed.
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.
