Major road works lasting several months have been announced for two of the busiest stretches of the M6 in the West Midlands starting this summer.
The Highways Agency said there have been 80 potholes in the last 12 months between junction 8 and junctions 5 and 6, which are all in Birmingham.
The work to correct them is similar to that carried out two years ago. It will start in June and end in December.
The agency said it hopes delays will not be too severe.
Robin Jackson, from the agency, said it was a "pretty serious problem".
"Potholes cause a problem for us because of their unpredictable nature," he said.
"Our customers suffer delays sometimes because we have to plan to get out there in good time so we hope that these works will enable us to remove those problems.
"The nature of the problem is pretty severe. Eighty potholes means 80 incidents where people have suffered delays and sometimes those delays are in inappropriate times - Monday mornings and Friday afternoons.
"Two years ago we did a similar project and it (congestion) wasn't too bad so we're hoping for a repeat of the same."