The A4138 is a main road in Carmarthenshire, Wales, connecting Pontarddulais with Llanelli. Running in a northeast to southwest direction, the road connects with Junction 48.svg [ M 4  ] M4 junction 48. [1] Northeast of the motorway, the road is classified as a non-primary route, while southwest 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

Settlements served by the road include:


Route map: 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