Traffic congestion built up at Gravel Hill in Poole after a water leak at the junction of the major road with Merley Park Road.
Temporary traffic signals were in place and Borough of Poole warned these are likely to continue throughout the evening rush hour.
Later, a Poole council spokesperson said: "We have been advised that the temporary traffic signals will be removed this evening. Engineers from Sembcorp Bournemouth Water will return to the site tomorrow evening, around 7pm, to carry out further works. All repairs should be completed later tomorrow night. Sorry for any inconvenience."