A4232 road
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| Route information | |
| Maintained by South Wales Trunk Road Agent (Capel Llanilltern – Culverhouse Cross Link Road) and City of Cardiff Council (all other Link Roads) | |
| Length: | 12.2 mi (19.6 km) |
| Existed: | 1978 – present |
| History: | Constructed 1978–1995 |
| Major junctions | |
| West end: |
     ![]](http://upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Motorway_Right.svg/5px-Motorway_Right.svg.png "]"){kind=small} M4 motorway (J33) |
 A48 road A4050 road A4055 road A4234 road A4161 road A48 road
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| East end: |
M4 motorway (J30) |
| Location | |
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Primary destinations: |
Cardiff |
| Road network | |
The A4232, which is also known either as the Peripheral Distributor Road (PDR) (Welsh: Ffordd Ddosbarthu Ymylol) or the Cardiff Link Road (Welsh: Ffordd Gyswllt Caerdydd), is a distributor road in Cardiff, the capital of Wales.
The first section of the PDR to be completed was the Southern Way Link Road in 1978 and the last section was the Butetown Link Road in 1995. Construction of the first phase of the final link road, the Eastern Bay Link Road, started on 17 March 2016 and is due to be completed by April 2017. When fully completed, the road will form part of the Cardiff ring road system. The PDR runs west, south and east of Cardiff, with the M4 between junction 30 and junction 33 completing the northern section. The PDR is dual carriageway for its entire length except for the East Moors Viaduct, which is a single carriageway. The entire length of the road has clearway restrictions on it.
The PDR has been constructed in separate link roads of between 1.61 km (1.00 mi) and 5.47 km (3.40 mi) around Cardiff and to date 22 kilometres (14 mi) including spurs have been opened to traffic, with plans for a further 5.53 km (3.44 mi). It has 4 large viaducts (Ely Viaduct, Grangetown Viaduct, Taff Viaduct and the East Moors Viaduct), 1 tunnel (Queen's Gate Tunnel) and 2 spur roads (Cogan Spur and Central Link Road). The road also has many smaller bridges over or under most of the interchanges on the road.
The road was conceived in the early 1970s and planning began in the late 1970s, by South Glamorgan County Council. The road at that stage was planned to be completed by 1995 and would relieve Ely, Grangetown, Butetown and East Moors of through traffic and as a fast link to the national motorway network via the M4 and A48(M). The first section of the PDR to be completed was the Southern Way Link Road between Newport Road (A4161 road) and the Eastern Avenue (A48 road) in 1978 and the last section of the PDR, the Butetown Link Road, was opened to the public in 1995.
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Wikipedia