Emergency repair work is underway on Dereham Road following an electrical explosion yesterday afternoon.
The road has now re-opened but temporary traffic lights are in place in both directions at the Old Palace Road junction as repair work is undertaken by the National Grid and UK Power Networks.
The roadworks could cause disruption to some bus services including First's red line and Konect's 53 services.
The small explosion happened at a link junction between two electrical substations at 1.30pm yesterday and forced emergency services to close Dereham Road.
The blast blew up a manhole cover on the pavement opposite Tesco, where two people were walking. Both were not harmed, but were left shaken by the incident.
Emergency services were initially called to a suspected gas leak, but it turned out to be an electrical problem.
Fire crews from Earlham and Carrow went to the scene and isolated the area.
The nearby Tesco store was left without power and 65 properties had their power supply switched off as engineers worked on repairs.
Police used blue tape to seal off the junction in all directions, while pedestrians were also prevented from walking in the area.
The road re-opened at 3.30pm.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here