The California Department of Transportation shut down the fast lane on each side of the highway at 9 a.m. so that crews could construct drainage improvements in the area, which has flooded due to recent storms.
Only one lane on each side of the highway was left open, causing traffic backups in both directions, CHP Officer Kevin Kroncke said.
Drivers should expect delays in the area, according to Kroncke.
Lanes are expected to open at about 5 p.m., Kroncke said.
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