The eastbound lanes of Ala Moana Boulevard were shut down Saturday due to a broken irrigation line.
The Honolulu Police Department was notified of the break at around 9 a.m.
All eastbound lanes were closed between Piikoi and Atkinson streets.
A city spokesman says the line belongs to the state Department of Transportation.
Crews shut off the line to stop the water from spreading on the road.
The lanes were reopened at 12:30 p.m.