The Highways Agency said it will spend more than £9m on safety and other improvements along the M62 motorway around Warrington.
The six month project includes adding a new concrete safety barrier in the central reservation and new layouts at the end of the link roads from the M6 onto the M62 motorways at Croft Interchange.
The Highways Agency said this will allow drivers to join the eastbound M62 more safely by providing extra entry lanes onto the carriageway.
The work is due to begin on Saturday 17 September and be completed by the end of March next year.
The improvements include new safety barriers between the verge and hard shoulder and moving lighting from the central reservation to the verge which aims to make maintenance safer and reduce disruption for drivers.
Matt Sweeting, the Highways Agency's regional asset delivery manager, said: "This is a significant investment in this key part of the local motorway network which will improve safety, reduce maintenance visits and associated disruption for drivers and deliver safer, smoother and more reliable journeys for commuters and other users of the motorway.
"We will also be using lane and limited carriageway closures to ensure we carry out routine maintenance at the same time."
The improvements are taking place along a 4.5 mile section of the motorway between Junction 9 of the motorway at Winwick and Junction 11 at Birchwood.
The work includes:
- Renewing the lighting between Junction 9 and 10 at Croft Interchange and moving the lighting from the central reservation to hard shoulder verges
- Extending the existing concrete safety barrier west from 11 to Junction 10
- Improving the roads linking Junction 10 of the M62 with Junction 21a of the M6 at Croft Interchange – one of the busiest motorway intersections in the region
- The improvements will be delivered using day and night lane one and hard shoulder closures and a 50mph speed limit through roadworks. Narrowed lanes will also be used in places
Some overnight closures of the main motorway carriageway as well as slip roads and the link roads with the M6 will also be needed.
The Highways Agency said this information will be publicised in advance and with clearly-signed diversions in place.