A4138 road

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A4138 shield

A4138 road map.svg
Route information
Length: 4.97 mi (8.00 km)
Major junctions
East end: Pontarddulais
  UK road A48 not trunk.PNG A48
[ M 4  ] Junction 48.svg M4 Motorway
A484 A484 road
West end: Parc Trostre
Road network

The A4138 is a main road in Carmarthenshire, Wales, connecting Pontarddulais with Llanelli. Running in a north-east to south-west direction, the road connects with Junction 48.svg [ M 4  ] M4 Junction 48. [1]

North-east of the motorway, the road is classified as a non primary route, while south-west of the motorway, the road is classified as a primary route. In both instances, the road is operated by Carmarthenshire County Council.


  • There have been proposals to make the southwestern section from the M4 to Llanelli a trunk road, which would be operated by the Welsh Assembly Government, but these have been rejected. [2]
  • The local council has a policy to reject any planning application that would prevent or adversely affect the implementation of a dual carriageway between the M4 and Trostre. [3]

Places served[edit]

Settlements served by the road include:


Route map: Bing / Google

KML is from Wikidata
  1. ^ Ordnance Survey. "1:50,000 Landranger Map". Retrieved 13 April 2012. 
  2. ^ Carmarthenshire County Council (12 December 2002). "REVIEW OF TRUNK ROADS IN WALES 2002". Retrieved 13 April 2002. 
  3. ^ http://www.cartogold.co.uk/Carmarthenshire/english/text/07_t_transport.htm#t6