PITTSBURG -- Drivers should take note of several full closures of Highway 4 that are planned this week, including all lanes early Halloween morning.

The first closure is a full westbound shutdown between the Somersville Road/Auto Center Drive exit in Antioch and Loveridge Road from 11 p.m. to 3:30 a.m. overnight Wednesday, according to a Contra Costa Transportation Authority news release.

Contractors will be working activities on the westbound bridge over Century Boulevard.

Meanwhile, eastbound traffic will be closed from Loveridge to Somersville/Auto Center from midnight to 5:30 a.m. Thursday and Friday morning and 1 to 6:30 a.m. Saturday morning, as the contractor restripes the road for additional lanes of traffic.

Eastbound motorists will be directed off the highway at Loveridge and down E. Leland Road to Somersville.

Roadwork continues next week, as eastbound lanes will be closed between Railroad Avenue and Loveridge from 12:01 to 5:30 a.m. Tuesday through Friday mornings, and 1 to 6:30 a.m. Saturday morning.

Drivers will be detoured off at Railroad and down Leland to Loveridge and onto the freeway.

For more information, visit http://4eastcounty.org.

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