Late-night drivers on Lone Tree Way between Antioch and Brentwood should add a few extra minutes to their travel times this upcoming week.

One lane of the road will be closed between Jeffery Way in Brentwood and Canada Valley Road in Antioch from 8 p.m. to 5 a.m. Monday through Friday, according to a Contra Costa Transportation Authority news release. Floggers will also be controlling traffic.

Contractors on the project to widen Highway 4 from two to four lanes will be grading new bridge embankments at Lone Tree Way, county officials said. The lane closure ensures crew and public safety.

Additionally, the middle lane of the eastbound Highway 4 off ramp to Lone Tree will also be closed.

One lane in both directions of Lone Tree will be open for motorists at all times.

For more information, call 925-206-3002 or visit www.4eastcounty.org.

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