Barrier work to begin on M5 motorway in Somerset
Work to install a central reservation barrier between junctions 21 and 22 of the M5 is to begin on Sunday.
It is being built along a four-mile (6 km) section of the motorway between Weston-super-Mare and Burnham-on-Sea.
The work will be carried out during the day and overnight, and will require the hard shoulder and various lanes to be closed for different periods.
The Highways Agency urged road users to drive carefully through the roadworks, which will be in place until February.
A spokesman said: "The existing steel barrier in the central reservation on this part of the M5 has reached the end of its serviceable life and needs to be replaced.
"The new concrete and steel barrier should last longer and require less maintenance, reducing the need for road closures and traffic restrictions in the future."
The work will also include drainage work, resurfacing and the installation of average speed cameras.