A busy roundabout is to be turned into a signal-controlled crossroad as part of a road widening scheme.
Lancashire County Council said changes to the Pope Lane roundabout near Kingsfold and Whitestake would help improve the flow of traffic along the A582.
There would also be additional lanes vreated on each of the four approaches to provide extra capacity.
It would also aimed at creating new safer crossings for cyclists and pedestrians.
County Councillor John Fillis, cabinet member for highways and transport, said: “This is the latest stage of our major plans to upgrade the whole length of the A582 to a dual carriageway.
“The A582 has suffered from significant congestion at peak times of the day, so the aim is to increase the road capacity and reduce congestion.
“This will improve the connection from Preston city centre, across South Ribble, connecting to the motorway network.
“We’ll be working to minimize the disruption caused by this work, and people will need to allow extra travel time in this area while this work is carried out.
“Through City Deal we’re improving the road to provide extra capacity and help people to get around the area. This will also help to unlock the economic potential of the area by creating new commercial opportunities, which will provide new jobs and growth.”
Preparatory site clearance and utility work is currently scheduled to start on Monday and will continue into August, with the main junction work following in September.
The project is expected to be completed by summer next year.
Over the past two years, the County Council has been making improvements to add capacity to the A582 and reduce delays on this key route in and out of Preston. There has already been improvements along the A582 including the Broad Oak roundabout, close to Booths supermarket. A section from Broad Oak has already been upgraded and other roundabout have been widened.
The upgrading of the A582 is one of the four major road schemes included in the Preston, South Ribble and Lancashire City Deal.