As rail construction ramps up around the H-1/H-2 freeway interchange, road crews will have to close a southbound lane on the H-2 overnight in the coming days near that merge, project officials say.

The southbound lane closure will take place 9 p.m. Monday to 4 a.m. Tuesday, and then repeat 9 p.m. Tuesday to 4 a.m. Wednesday, according to a Honolulu Authority for Rapid Transportation release.

The closures are needed as crews prepare to erect columns in the freeway medians at the merge, according to HART.

"We ask the drivers for their continued patience and understanding during the work and to be mindful of our crews stationed along the freeway," HART CEO Dan Grabauskas said in the statement.