LANCASHIRE County Council is alerting people to disruption on the main road between Ramsbottom and Rochdale while repairs take place to a retaining wall.
Work has started to demolish and rebuild a section of the wall supporting the A680 Rochdale Road near its junction with Scout Road.
The majority of the work will be carried out with a single lane closure in place, using temporary lights to control traffic.
However, overnight road closures will be needed at times due to the size of the construction machinery used to install, and later remove, steel sheet piles.
Rochdale Road is scheduled to be closed for up to seven nights from 9pm until 6am from Tuesday, April 6, and again for up to two nights from Thursday, June 3 while the work takes place.
While the road is closed a diversion suitable for all vehicles will be signed via A56 Manchester Road, the M66, A58 Bury New Road, Queen's Park Road and Norden Road.
The project is scheduled to be completed, and all traffic management removed, by Wednesday, June 9, as long as no major delays are caused due to poor weather.
Kenton Chong, principal bridge engineer for Lancashire County Council, said: "Rochdale Road is a very busy route, and we've planned this essential maintenance to the retaining wall very carefully to minimise disruption as much as we can.
"There will be some noise from machinery, however we will try to carry out the noisiest activities during the day and put noise protection measures in place where required.
"Most of the work can be done with only a lane closure in place, however I'd ask people to note the upcoming overnight road closures in case they need to plan their travel around this.
"We're sorry for any inconvenience and are grateful for people's patience while we carry out this essential maintenance."
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