The A38(M) Aston Expressway and M6 junction 6 in Birmingham will be closed this weekend as Highways England continues work to protect Spaghetti Junction.
The roads will close at 8pm tonight (Friday July 22), and will reopen at 6am on Monday.
From Monday morning, and for the next six weeks, the A38(M) out of Birmingham will be limited to two lanes, with a 30mph speed limit for safety. All three lanes into the city will still be available, but with the same speed restrictions.
Highways England project manager, Jess Kenny, said: “From Monday (25 July), the lane restrictions on the Aston Expressway out of Birmingham may affect people driving home after work. We’re urging drivers to plan ahead, consider alternative arrangements and check live traffic before setting off to help avoid queues.
“Throughout this project, Birmingham remains open for business. It will still be possible to drive into and out of the city, and the council is encouraging drivers to take public transport or alter their journeys where possible.”
The Aston Expressway needs traffic management to allow Highways England to safely close M6 junction 6, where road crews will work to replace waterproofing, repair damaged concrete, and resurface the road for smoother journeys.
Highways England has worked closely with Birmingham City Council to plan the roadworks to minimise disruption.
The weekend closures are taking place during the summer holidays as the roads around Birmingham are much quieter.
It is hoped that the project will be complete by the end of the year, but Highways England has stressed that engineers cannot tell the scale of concrete damage to be repaired until the carriageway is closed and the road surface removed.