Highways England has finally revealed its plans to fix the "missing link" on the A417.
The road near Gloucester is the last stretch of single carriageway linking the M4 and the M5, and is going to be upgraded to a duel carriageway.
It's hoped the upgrade will improve journey times, and fewer queuing cars will improve pollution issues for nearby communities.
Highways England Senior Project Manager Michael Goddard, said:
“This scheme will bring a number of benefits to the area.
“Besides making journey times more reliable, reducing rat-running through neighbouring communities, it will also improve the lives of people who live close to the route and make it easier for drivers, walkers and other local road users to get around.
“Improving this key road connection complements the landscape in this area, and also supports the predicted growth in jobs and housing in Gloucestershire.”
Gloucestershire County Council has welcomed the news.
Cllr Mark Hawthorne, Leader of Gloucestershire County Council, said:
“We have been pushing for decades to sort out the A417 missing link - and today’s news puts the project much closer to the finishing post.
“Local residents have had to suffer pollution, delays and serious accidents as a result of this road – today’s announcement takes us much closer to sorting that out for good. The county council has already invested £1.5m to support the development of this scheme – and we will keep backing Highways England to get it built.”