Work will take place next weekend to repair a bridge on the A59 near Tarleton after it was hit by a car in March.
Bank Bridge carries the main A59 Liverpool Road over the River Douglas. It was badly damaged when struck by a car, resulting in a length of the parapet wall being demolished.
Lancashire County Council recovered the fallen stonework earlier this year and is now ready to reconstruct the wall.
The road will need to be restricted to one-way traffic controlled by temporary lights while the repairs take place, but engineers will be working overnight to minimise disruption and complete the job as quickly as possible, while keeping the bridge open during the day.
Work will start at midnight on Saturday June 7, with the road being reopened at 9.00am on Sunday June 8. Work will then begin again at midnight on Sunday June 8, with the road being reopened at 5.00am on Monday June 9.
David Leung, bridges design manager, said: "We're sorry for the disruption while we carry out these essential repairs, but hope to keep this to a minimum by working overnight during the weekend.
"The Bank Bridge is a Grade II listed structure and we'll be re-using as much of the original stonework as we can, along with heritage materials such as lime mortar, to restore its appearance.
"There is a history of this bridge being damaged by vehicles which have lost control, particularly by going too fast around the bend at the east side of the bridge.
"The speed limit over the bridge was reduced following an incident in 2012, and following the latest damage we have installed more signs warning motorists to slow down before the bridge."