A million pound upgrade of two junctions on the A69 in Carlisle has begun.
Improvements will be made to the Montgomery Way and Eastern Way junctions, with the bend being made wider to allow for better flow of traffic.
The work will last for around six months, according the Cumbria County Council.
The scheme has received some controversy, after the original proposals included a new extra lane and the chopping down of trees.
A controversial £1million scheme to put an extra lane on a Carlisle road looks set to be thrown out.
Cumbria County Council's plan to widen Warwick Road has been met with opposition from some residents. Carlisle City Council is expected to withdraw support for the proposal at a meeting tonight.