M275 lane closures resume after congestion problems
Maintenance works on the M275 in Hampshire, which had to be postponed after causing "unacceptable" congestion, will resume later.
The main motorway into Portsmouth will be partially shut during seven nights, until 17 August.
At the end of June, thousands of drivers were caught in traffic jams on the motorway.
Contractors Colas and the city council apologised after many were forced to abandon their cars.
The work to change the road layout ahead of the waterproofing of three bridges will begin at 20:00 BST.
Parking tickets cancelled
City council leader Gerald Vernon-Jackson, said the plans were revised to reduce the impact on motorists after the problems in June.
He said all lanes would remain open both northbound and southbound at all times, except at night.
"The last time we had chaos it went down to one lane going northbound, which is what caused the whole city to gridlock," he said.
"This work has got to be done. We have have got to waterproof that bridge, otherwise we will have to replace it which will be a lot more inconvenient."
Paul Ferroni, from Colas, which is carrying out the works on behalf of the council, said they were aware of the pressure the work would put on the road network, but were working hard to cause "minimal disruption".
Mr Vernon-Jackson earlier said all parking tickets issues by the council on 29 June during the the height of the traffic problems had been cancelled as a "gesture of goodwill."