The A4055 is the main road link between Cardiff Bay

Cardiff Bay

Cardiff Bay is the area created by the Cardiff Barrage in South Cardiff, the capital of Wales. The regeneration of Cardiff Bay is now widely regarded as one of the most successful regeneration projects in the United Kingdom. The Bay is supplied by two rivers to form a freshwater lake round the...

 and Barry.

The road goes through the village of Dinas Powys

Dinas Powys

Dinas Powys is a large village and a community in the Vale of Glamorgan in South Wales which takes its name from the Dinas Powys hillfort that dates from the Iron Age...

 and there has been a call for by-pass due to the volume of traffic from Barry to and from Cardiff

Cardiff

Cardiff is the capital, largest city and most populous county of Wales and the 10th largest city in the United Kingdom. The city is Wales' chief commercial centre, the base for most national cultural and sporting institutions, the Welsh national media, and the seat of the National Assembly for...

. However the Vale of Glamorgan Council

Vale of Glamorgan Council

The Vale of Glamorgan Council is the governing body for the Vale of Glamorgan, one of the Principal Areas of Wales. It is run by the Conservative Party after the United Kingdom local elections, 2008, taking over the council from no overall control....

 confirmed in June 2007 that the by-pass would have to be funded by the Welsh Assembly Government (WAG).

The road was extended in 1988 from the junction of the A4160 to the Ferry Road Interchange of the A4232

A4232 road

The A4232, which is also known either as the Peripheral Distributor Road or the Cardiff Link Road , is a distributor road in Cardiff, the capital of Wales....

, this is called the Cogan Spur and as such it is also a spur

Spur route

A spur route is a short road forming a branch from a longer, more important route . A bypass or beltway is never considered a true spur route as it typically reconnects with the major road...

 road off of the A4232.

Route

The road starts from the Cardiff International Sports Village

Cardiff International Sports Village

Cardiff International Sports Village is located in Cardiff Bay in the city of Cardiff, Wales. It is one of the largest regeneration projects currently in the UK...

 at the Ferry Road Interchange (A4232), then along the Cogan Spur until the junction of Barons Court. From there it goes through Llandough

Llandough

Llandough is a village and southern suburb of Cardiff, in the Vale of Glamorgan, Wales.- Location :...

 and Dinas Powys. The road then enters the Barry district of Palmerstown along Cardiff Road and goes into Weston Square, Gladstone Road, Broad Street, Harbour Road and finally Friars Road in Barry Island

Barry Island

Barry Island may refer to:*Barry Island , Wales*Barry Island , Antarctica...

.