Lane closures will be required on Crescent Bridge in Peterborough city centre to ensure the road is safe to use.
The council works are to examine the condition of the steelworks beneath the carriageway to ensure the bridge is safe to use for years to come.
Whilst the works are on-going, traffic restrictions will be required on the road as brick work is taken out underneath to allow the steel to be investigated.
The two lanes of traffic heading into the city centre will be restricted to a single lane from Monday October 12. This 24 hour restriction is expected to be in place for one week.
The lane leading out of the city centre will have a width restriction in place from Monday 19 October, but will remain open to traffic. This 24 hour restriction is expected to be in place for eight days.
There will also be overnight closures in November that will close the outbound lane overnight. These dates will be signed in advance on site information boards.
Two way traffic will be maintained throughout the restrictions and pedestrian routes over the bridge remain open.
Andy Tatt, Head of Peterborough Highway Services for Peterborough City Council, said: “These investigative works are essential to ensure the upkeep and general maintenance of Crescent Bridge, a vital route in and out of the city centre.
“When the structural works take place below the bridge, the corresponding traffic lane above will have to be closed. During this time the public will not see works on top of the bridge for this reason.
“All the above work is subject to change depending on what is found during the investigation procedure.
“We apologise for any inconvenience the works may cause to drivers.”