Honolulu police reopened Kailua Road between Aumoe Street and Kainalu Street after a water main break on Thursday.
Board of Water Supply crews completed repairs to the road at 3:45 p.m. so traffic could resume.
The break was reported at around 5:30 p.m. Thursday. The water from the break had flowed into some driveways and yards.
Water was restored at around 1:30 a.m. Friday for the 40 homes that were affected.
A Board of Water Supply crew says the closure is due to a 10-inch water main break that was originally installed in 1944.
Red Cross officials responded to assist residents in need.
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