Work has started on a £490,000 Highways Agency scheme to add a second lane to the westbound exit slip at Junction 5 of the M65 motorway at Blackburn.
The six week scheme, which will reduce queues on the main carriageway, began on Monday 10 January and is expected to be completed by the middle of next month.
The Highways Agency said as well as adding the extra lane to the exit slip road onto Guide roundabout other improvements will be delivered including new barriers, lighting and traffic signals on both the eastbound and westbound exit slip roads off the M65.
The roundabout will also be improved with new lining and anti-skid surfacing and the addition of a short, second lane on the exit from the roundabout onto the A6177 towards Guide.
Work on the scheme is being carried out overnight with occasional closures of roundabout lanes, the exit slip roads and the northbound A6177 from the roundabout are being restricted to off-peak periods. Any diversions are being clearly signed.
Mark Mosley, Highways Agency project sponsor, said: "This junction serving Blackburn and surrounding communities is one of the busiest along the M65 – particularly at peak times – and this scheme will reduce congestion and queuing at the roundabout as well as reducing any queuing of traffic on the main carriageway wanting to exit here.
"We appreciate that there may be some disruption to drivers' journeys as we carry out the work but we are working hard to minimise those by restricting key work to off-peak periods. The work will be finished next month and motorway users, as well as other users of the roundabout, should quickly appreciate the benefits."