Repair work that would have closed the Waianae-bound lanes of the Airport Viaduct and the Diamond Head-bound lanes of Moanalua Freeway below the viaduct has been postponed a day, according to state transportation officials.

The nightly closure will instead begin Tuesday and end Thursday, from 9 p.m. to 4 a.m. nightly. The repair work will close the viaduct from the onramp and close the the Diamond Head-bound lanes of Moanalua Freeway, between the King Street offramp and the Middle Street overpass.

State officials say repairs are needed to the railing along the viaduct onramp following damages to the bridge in a March 29 incident, in which a truck carrying crane parts lost its load. The load hit the barrier of the overpass, sending debris down to Moanalua Freeway and closing it during Friday afternoon traffic.

Detours are as follows:

>> Diamond Head-bound motorists on Moanalua Freeway may use the airport offramp and proceed on Puuloa Road to enter the H-1 from Nimitz Highway. Motorists may also exit Moanalua at King Street and get back on H-1 from Kalihi Street.

>> Waianae-bound motorists can get to the Airport Viaduct by getting off at the Middle Street offramp and heading towards Nimitz Highway.