A £6.3m Highways Agency project to renew motorway lighting along the M62 trans-Pennine route in West Yorkshire got underway this week.
A £7.9m project to bring ageing lighting up to current standards between Junction 22 and Saddleworth and Junction 23 at Outlane also began a fortnight ago.
The second, £6.3m, scheme - to upgrade the lighting between Junctions 24 at Ainley Top and 25 at Brighouse - began on Monday.
Both schemes are to set last until the end of March next year.
During the work there will be narrow lanes in both directions of the motorway between the two junctions as well a 50mph speed limit enforced by safety cameras, for the safety of motorway users as well as roadworkers.
As well as replacing columns and installing new lighting systems sections of old safety barrier will be removed and replaced with new barriers.
Highways Agency Project Sponsor Sujad Hussain said: “Both these projects involve the important renewal of lighting along this key stretch of the strategic roads network.
“We are not anticipating major delays for motorway users but with heavy plant and roadworkers on-site around the clock we would ask them to respect the 50mph speed limit through the roadworks which is there for their safety and for the safety of our roadworkers.”