Bristol City Council is redesigning the road layout near Temple Meads railway station.
It is expected that the work won't be finished until at least Autumn 2018.
Work starts today to redevelop the Temple Gate roundabout.
Anyone who drives through Bristol knows how busy the roundabout can get.
It's right next to Temple Meads train station, and is a junction for almost every major route leading in and out of the city.
The Southern section of the Temple Gate Roundabout will be closed until Autumn 2018.
The redevelopment of Temple Quay is at the forefront of the plans, but the main goal is to ease traffic disruption in one of the most congested in the country.
For those that have been caught in the congestion, this is the start of essential works to regenerate a struggling part of the city
For others it's yet another barrier to Bristol's traffic flow