A £330,000 scheme to improve safety on the M6 in Cumbria will start on Monday.
Existing central reservation barriers between Penrith and Carlisle will be strengthened and improved over a 10-week period.
The work will be carried out overnight, between 2000 and 0600 GMT, with at least one lane of the motorway remaining open in both directions.
Highways Agency project manager Bob Clark said it was an important move to improve safety on the route.
He added: "We have carefully planned for the project to cause the minimum amount of disruption to road users and to keep traffic moving during the works."
A 50mph speed limit will be in place at all times until the scheme is completed in late March.