A blown transformer appears to be to blame for the partial closure of the Caldecott Tunnel, which could extend into the weekend, Caltrans officials said Friday.
The mechanical issue — which was caused by a string of powerful storms that slammed into the Bay Area this week — shut down bores 1 and 3 of the Caldecott Tunnel on Wednesday evening, causing delays on Highway 24, a key connector between Alameda and Contra Costa Counties.
As a result, Bore 2 is being used for eastbound traffic, while Bore 4 is open to westbound motorists.
Bart Ney, a spokesman for Caltrans, said there is no estimated time for when the two affected bores may reopen. Crews are working to address the issue, he said, and more information may be available later Friday.
Caltrans plan to share updates about the closure on its X page. Motorists may also call 800-427-7623 for more information.
This is a developing report. Check back for updates.
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