Crews are working to to repair a broken 8-inch water main at 3258 Oahu Ave. near Loulu St. intersection.
Oahu Ave. at the makai-end of Loulu is closed until work is complete.
Motorists are advised to use Manoa Rd. or Keahi St. as an alternate route.
The main break was reported Wednesday night at 9 p.m. Crews have been working overnight to complete repairs.