It wasn’t immediately clear what caused the hydrant to leak.
Long Beach Public Works tweeted that the repairs include excavating and replacing a damaged pipe.
Long Beach officials expect the road to be reopened by Wednesday, May 1 at 4 p.m.
The Traffic Circle will be temporarily closed starting Monday night as road work is completed along Pacific Coast Highway.
One party involved sustained minor injuries and was treated at the scene by the Long Beach Fire Department, authorities said.
A motorcyclist died in a traffic collision near Pacific Coast Highway Lemon Avenue Tuesday afternoon.
Annual street maintenance work will close downtown on-ramps and off-ramps on the 710 Freeway this Sunday.