A4138 shield
Route information
Length4.97 mi (8.00 km)
Major junctions
East end A48 at Pontarddulais
Major intersections M4
West end A484 at Parc Trostre
CountryUnited Kingdom
Road network

The A4138 is a main road in Carmarthenshire, Wales, connecting Pontarddulais with Llanelli. Running in a northeast to southwest direction, the road connects with 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.


Places served

Settlements served by the road include:


Route map:

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. ^ "Carmarthenshire Council - Unitary Development Plan: Transportation". Carmarthenshire County Council. Archived from the original on 28 December 2013.