Motorists are likely to face traffic delays on the M6 around Birmingham next March when a £7.5m resurfacing programme gets under way.
Two elevated sections of the 30-year-old motorway will be affected, at Bromford and Ray Hall in the West Midlands.
The 140,000 drivers who use that part of the M6 every day are being told the work is needed to prevent potholes developing.
Route manager Paul Cockell said something needed to be done about the problem.
Road surface
"When the road surface reaches the end of its working life, the waterproofing beneath it peels away," he said.
"Then a combination of heavy goods vehicles using the stretch and lots of rain equals potholes."
The two sections of the motorway where potholes are most likely to appear are at the Bromford viaduct at junctions five to six heading north and Ray Hall viaduct at junction eight heading south.
Mr Cockell said the scheme could coincide with work planned for the Aston Expressway.
"We'll be working with the city council to find out how we can fit in with works they may be doing at the same time."