Two westbound bores of the Caldecott Tunnel between Oakland and Contra Costa County on state Highway 24 will be closed in various stages for routine maintenance this week.
The closures will be from 10 p.m. to 4:30 a.m. Tuesday through Thursday, according to Caltrans.
Bore No. 3 will be closed on Tuesday and Thursday while Bore No. 4 will be closed on Wednesday.
The closures will allow crews to clean storm drains, look for leaks and do other kinds of routine maintenance, Caltrans officials said.
People should expect delays and should be careful while driving through the tunnel, reduce driving speeds and keep an eye out for Caltrans crews.
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