ANTIOCH -- Drivers on Highway 4 can expect delays in the early-morning hours this weekend as construction work continues to widen the road from four to eight lanes.

Contractors will close all lanes of the highway between the Lone Tree Way/A Street and Contra Loma Boulevard/L Street exits for safety reasons as they demolish an inactive portion of the G Street bridge, according to a Caltrans news release.

Westbound lanes will be closed from midnight to 6 a.m. Saturday and Sunday, and midnight to 3 a.m. Monday. Eastbound lanes will be closed 1 to 7 a.m. Saturday and Sunday, and midnight to 4 a.m. Monday.

Westbound drivers will be detoured off at A and down 18th St to the L street on-ramp. Eastbound drivers will be directed off at Contra Loma and down Fitzuren Road and Putnam Street back to Lone Tree.

Motorists should expect delays and allow for extra travel time.

For information on Highway 4 closures, visit http://widensr4.org.

Contact Paul Burgarino at 925-779-7164. Follow him at Twitter.com/paulburgarino.



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