An 8-inch waterline break beneath Campbell Avenue was repaired by 11 p.m. Tuesday and Campbell was opened for traffic in both directions shortly after that.
Tucson Water Department spokesman Fernando Molina said Wednesday that the road was closed after a line running under the middle of the street broke Tuesday afternoon for an undetermined reason.
He said the water supply to a shopping center and to an apartment complex on Campbell was interrupted by the waterline break about 1:30 p.m.
Water service was restored late Tuesday to the shopping center and to the apartment dwellers, Molina said.
City employees distributed water to residents and businesses in the area.