The revamped Tollbar End was officially opened last week after work costing £106 million was finally completed.
The major project aims to reduce the volume of traffic using the Tollbar End roundabout by providing a two lane dual carriageway underpass link and a larger layout designed to reduce congestion.
Construction started back in 2014, with many drivers experiencing delays while the work went on.
After the official opening on Thursday March 16, Highways England chairman Colin Matthews said: “Tollbar End’s completion is fantastic news for motorists.
“It is a key hub in the Midlands road network and the £106 million scheme is already providing the benefits of smoother journeys between the important north-south routes.
“The opening of the underpass has improved traffic flow and alleviated congestion at what was once an historic bottleneck.”
Drivers travelling along the A45 Stonebridge Highway and A46 Coventry Eastern Bypass now have a free-flow link underneath the Tollbar roundabout, meaning they avoid it completely.
The layout of the roundabout itself has been improve, with better access to the existing routes.
And the existing A45 Stonebridge Highway has been widened to a three lane dual carriageway between the new Tollbar roundabout and Stivichall junction to improve capacity and safety for drivers.
Highways England project manager Paul Nagra said: “Everyone will benefit from the new road and journey times will be shorter and safer as a result of the new layout.
“It will also increase traffic flow and see a reduction in congestion.
“We are really grateful to everyone for their patience while the work has been ongoing.”