A project to upgrade drainage on a stretch of the A66 near Penrith is due to start on Wednesday.
The month-long Highways England scheme will tackle flooding issues on the section of the road near Whinfell Park, around three miles east of the town.
The majority of the work will be carried out overnight although a temporary 40mph speed limit will be in place at all times of day for the safety of drivers. During night work (between 8pm and 6am) temporary traffic lights are going to be in use. Drivers may also be led through the roadworks in 10mph convoys on some occasions.