A burst water main has cut out traffic lights at Sneinton Hermitage.
The incident happened just as rush hour was preparing to kick off on Friday at around 4pm.
The road has been flooded from Ace Auto Services to the junction with Colwick Road and Meadow Lane, with a local resident saying the water "reaches about half way across the road and the spill off is running in various directions."
Nottingham City Council sent out a emergency works bulletin shortly after 4.30pm.
A spokesman said that Severn Trent Water would be there "within the hour" and would be putting temporary four way traffic signals in place whilst the mains were being fixed.
The bulletin said it expected the works to last for 24 hours but added the end date was "until repairs are complete."
Moderate delays are expected.
