The eastbound lanes of the H-1 freeway are scheduled for overnight closure this week between the Campbell Industrial Park / Barbers Point Harbor off­ramp (Exit 1A) and the Wakea Street onramp beginning today.

The closures will take place nightly from 9 p.m. to 4:30 a.m. through Friday morning.

The state Transportation Department said the closure is necessary so crews can work on the Farrington Highway overpass as part of the second phase of the Kapolei Interchange Complex project.

Eastbound motorists will be directed to Kalaeloa Boulevard via the Campbell Industrial Park / Barbers Point Harbor offramp and may continue on Kapolei Parkway, Kamokila Boulevard and the Wakea Street onramp to return to the freeway.

Electronic message boards will be posted to warn motorists of the closure. Special-duty police officers will be on-site to assist with traffic control.

Other lane closures associated with the project include:

>> Two right lanes will be closed on the H-1 in the westbound direction between the Kualakai Parkway underpass and the Makakilo Drive overpass from 9 p.m. to 5 a.m. today through Friday morning for guardrail installations.

>> A left-lane closure on the H-1 in both directions between the Wakea Street onramp and the Makakilo /Kapolei / Kalaeloa offramp (Exit 2) will take place from 8:30 a.m. to 3 p.m. Monday through Friday to allow for work on the median.

Motorists are advised to allow for extra travel time and to check traffic apps for updated information before heading to their destinations. Roadwork is weather permitting.