South Wales Trunk Road Agency

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The Road Network managed by the Agency

The Trunk Road network in South Wales consists of approximately 436 route kilometres of trunk road and 178 route kilometres of motorway.

The Agency Area in South Wales covers virtually all of the 14 local Authority administrative areas between Fishguard and the Second Severn Crossings.

The enclosed table provides a breakdown of the routes within the SWTRA area

   
Trunk Road  
M48 Severn Bridge – M4, Jct. 23 Rogiet
M4 Second Severn Crossing – Pont Abraham
A48M M4, Jct. 29 – A48 Western Avenue
A40 English border @ Monmouth - Fishguard
A4042 M4, Jct. 25A – A40, Hardwick Roundabout, Abergavenny
A4060 A470, Jct. @ Pentrebach – A465, Jct. Dowlais
A4076 Milford Haven – A40, Haverfordwest
A4232
M4, Jct. 33, Chapel Llanilltern – Culverhouse Cross Interchange
A449
M4, Jct. 24, Coldra – A40, Raglan Interchange
A465 Llangua – M4, Jct. 43, Llandarcy
A466 Newhouse Roundabout – A48(T) Highbeech Roundabout
A470 M4, Jct. 32, Coryton – A465, Cefn Coed
A477 Jct. A40, St. Clears – Pembroke Docks
A48 Chepstow – Carmarthen
A483 Pont Abraham – A40, Rhosmaen
A487 A40, Fishguard – Feidr Cefn Layby
   

Most other roads that form part of the highway network are the responsibility of the local Authority in whose administrative area that the highway falls

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