Almost £5 million worth of road improvements are being carried out across the West Midlands.
A £3 million resurfacing scheme on a two-mile section between junction 1 and junction 8 of the M5, including the roundabout, started this month and will last for approximately 20 weeks.
At the same time, safety barriers will be replaced and the hard shoulder will be widened.
Motorists will be restricted to a single lane in each direction on one carriageway at a time while the other carriage-way is resurfaced.
The Highways Agency said there would be occasional overnight closures of the whole motorway to allow specific work to be carried out.
Jonathan McCarthy, Highways Agency project manager, said: "We are carrying out these works as quickly as possible in order to reduce disruption to motorists.
"Once completed, the renewed carriageway will benefit road users and people living close to the carriageway.
"Severe delays are not expected but motorists are advised to allow extra time for their journeys."
Meanwhile, £1.9 million worth of work on a one-mile section of the A46 northern bypass near Stratford Upon Avon, between A3400 Bishopton Island and A422 Shottery Island, has also started and will last for approximately seven weeks.
Carriageway resurfacing work will be carried out at night with one carriageway closed overnight for resurfacing.
Traffic will be diverted through Stratford town centre during the works.
The HA said wide loads would not be able to travel through the site until work is completed so a clearly-marked diversion will be available.
Mr McCarthy added: "We are carrying out this work overnight in order to reduce disruption to motorists.
"Once completed, the renewed carriageway will benefit road users and people living close to the carriageway."
