Westbound traffic will be detoured at the Keehi Interchange to Nimitz Highway tonight through Thursday morning, from 9 p.m. to 4 a.m., for bridge expansion joint replacement work.

The H-1 Freeway Airport Viaduct connector ramp will be closed from the Nimitz Highway off-ramp (Exit 18), just beyond the Middle Street Tunnel, to the Kakoi Street overpass. Westbound H-1 traffic will be detoured onto the Nimitz Highway off-ramp. Motorists will be able to rejoin the H-1 Freeway at the Valkenburgh Street on-ramp.

Westbound motorists are advised to use alternate routes including the H-201 Moanalua Freeway or the Nimitz Highway on-ramp near Sand Island Access Road and to allow for extra travel time.

Roadwork is weather-permitting.