HONOLULU - Lanes on the H-1 Freeway are back open Monday morning after they were closed overnight.

Dillingham Boulevard is closed in both directions at Middle Street due to mud and debris. The Dillingham Blvd. and Middle St. off-ramp will be closed at the viaduct and all eastbound traffic will have to take Nimitz Hwy. or continue on H-1 eastbound.

PHOTOS & VIDEOS: Oahu flooding from Darby

All makai bound traffic on Middle St. will be forced to turn right onto the H-1 west or onto Nimitz Hwy. beneath the viaduct.

All westbound traffic on Dillingham Blvd./Kamehameha Hwy. will be forced to U-turn near Marukai.

At 11:15 p.m. Sunday night, the H-1 Freeway in both directions near School Street was closed due to flash flooding. Heavy rain from Tropical Storm Darby came pouring down onto the highway just before 8:30 p.m. Sunday night.  Several cars stalled in the flood waters forcing officials to shut down that portion of the highway.  

A state Department of tTransportation spokesman said maintenance crews verified that storm drains in the area were clear.  The National Weather Service reports more than 2-4 inches of rain per hour over Oahu.