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The Walnut Creek Police Department has advised commuters that all lanes of Ygnacio Valley Road are closed in both directions between Walnut Blvd and N Civic Drive.
According to police, there is a large tree and several power poles / lines down. PG&E and City crews will be working on this well into morning commute and possibly evening commute. PG&E estimates 12-15 hours until they can reopen any lanes.
According to PG&E, at least 535 people are without power.
Police urge drivers to use alternate routes and avoid the area if possible.