A472 road

The Crumlin Valley Colliery coal washery building on the A472 at Hafodyrynys between Crumlin and Pontypool

Congestion just before the Old Crumlin road junction between Hafodyrynys and Pontypool

The A472 is a cross valley link road in South Wales that runs west to east across the old South Wales coalfield from Treharris through Nelson, Ystrad Mynach, Maesycwmmer, Pontllanfraith, Newbridge, Crumlin, Hafodyrynys, Pontypool and thence into the Usk valley, through Little Mill and Usk to a junction with the A449.

It effectively covers a cross section of south east Wales from the post-industrial valleys to rural Monmouthshire, passing through small villages, larger towns, areas of relative prosperity and areas benefitting from redevelopment and it is a road that plays a part in that rejuvenation.

The road has been largely created from new and improved sections developed since 1980.

Between 1992 and 1994 a major by-pass was built to ease the bottleneck of traffic around Pontllanfraith. This dual carriageway runs from Maesycwmmer in the West through to Newbridge in the East and has links to Blackwood (via The Sirhowy Enterprise Way) and Newport.

Between Crumlin and Pontypool the road has been laid largely upon the trackbed of the disused Taff Vale Extension railway line.

The A472 is notorious for the Maesycwmmer crawl - a 4-mile section of the road which suffers heavy congestion during rush hour.

Junctions

Eastbound exits	Junction / Interchange	Westbound exits
A472
Start of A472	Quakers Yard Roundabout	Cardiff A470 Aberdare A4059 Merthyr Tydfil A470
Cilfynydd A4054 Abercynon (B4275) Aberfan A4054	Fiddler's Elbow	Aberfan A4054 Cilfynydd A4054 Abercynon (B4275)
Nelson, Bedlinog B4255	Nelson Roundabout	Nelson, Bedlinog B4255
Nelson, Bedlinog B4255	Wern Roundabout	Nelson B4255
Council offices Gelligaer B4254	Tredomen Roundabout	Council offices Gelligaer B4254
Ystrad Fawr, College Town centre	Ystrad Mynach Roundabout	Town centre Llanbradach
Bargoed, Rhymney A469	Cwmbach Roundabout	Bargoed, Rhymney A469 Caerphilly A469
Caerphilly A469 Exit only	Cwmbach Roundabout	Access only
Fleur-de-Lys B4252	Maesycwmmer Junction	Fleur-de-Lys B4252
Rhymney A4049	Crown Roundabout	Rhymney A4049
Ynysddu B4251 Pontllanfraith B4251	Gelligroes Roundabout	Pontllanfraith B4251 Ynysddu B4251
Tredegar, Blackwood, Newbridge, Pontllanfraith A4048	Pentwyn-Mawr	Tredegar, Blackwood, Newbridge, Pontllanfraith A4048
Start of A472	Celynen Roundabout	Newbridge (avoiding low bridge) Abertillery, Brynmawr A467 Pontypool (A472) Ebbw Vale (A4046) Crosskeys, Newport A467
Concurrent with A467
Newport A467 Newbridge (A472) Blackwood (A4048) Brynmawr A467 Ebbw Vale (A4046)	Crumlin Junction	Start of A472
Swffryd B4471	Hafodyrynys Junction	Swffryd B4471
Pontypool, Blaenavon A4043	Pontypool Roundabout	Pontypool, Blaenavon A4043
Griffithstown, Upper Race, Cwmnyscoy, College	Pontypool Interchange	Griffithstown, New Inn, Upper Race, Cwmnyscoy, College
Start of A472	Pontymoile Roundabout	Abergavenny A4042 Usk (A472) Cwmbran, Newport A4042 (M4)
Concurrent with A4042
Abergavenny, Newport, Cwmbran A4042	Little Mill Junction	Start of A472
Abergavenny B4598	Bridge Street Junction	Abergavenny B4598
Chepstow, Gwernesney, Llandenny B4235	Usk Junction	Chepstow, Gwernesney, Llandenny B4235
Start of A472	Usk Interchange	The MIDLANDS (M50) Monmouth A449 (A40) Cardiff (M4) Newport A449
1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus Incomplete access

A roads in Zone 4 of the Great Britain road numbering scheme

	A4 A40 A41 A42 A43 A44 A45 A46 A47 A48 A49

	A403 A404 A405 A406 A412 A413 A414 A415 A417 A418 A419 A420 A421 A422 A423 A425 A426 A427 A428 A429 A431 A432 A433 A435 A441 A442 A444 A445 A446 A448 A449 A452 A453 A454 A456 A458 A461 A465 A468 A469 A470 A472 A473 A474 A475 A476 A477 A478 A482 A483 A484 A485 A486 A487 A488 A489 A490 A491 A493 A494 A496 A497 A498 A499

	A4005 A4006 A4008 A4010 A4012 A4018 A4025 A4032 A4037 A4040 A4042 A4050 A4053 A4054 A4055 A4059 A4060 A4061 A4063 A4067 A4069 A4074 A4076 A4080 A4085 A4094 A4103 A4107 A4109 A4110 A4113 A4117 A4118 A4119 A4123 A4130 A4133 A4135 A4136 A4138 A4142 A4146 A4148 A4150 A4155 A4160 A4161 A4169 A4173 A4174 A4202 A4212 A4216 A4217 A4221 A4226 A4230 A4232 A4234 A4240 A4241 A4260 A4361 A4400 A4536 A4540

List of A roads in Zone 4 List of B roads in Zone 4

Transport in Caerphilly County Borough

Road

Bus	Stagecoach in South Wales Traveline Cymru Newport Transport

Railway lines	Rhymney Line Ebbw Valley Railway

Railway stations	Aber Bargoed Brithdir Caerphilly Crosskeys Energlyn and Churchill Park Gilfach Fargoed Hengoed Llanbradach Newbridge Pengam Pontlottyn Rhymney Risca and Pontymister Tir-Phil Ystrad Mynach

Cycle	Taff Trail Celtic Trail (including NCR 46 and NCR 47) NCR 4:Newport to Llanelli section NCR 465 NCR 466 NCR 467 NCR 469 NCR 475

Walk	Cistercian Way Rhymney Valley Ridgeway Walk Sirhowy Valley Ridgeway Walk Taff Trail

Waterways	Monmouthshire & Brecon Canal

Transport in Monmouthshire

Road	M4 motorway European route E30 M48 motorway A40 road A449 road A465 road A472 road A4042 road A4136 road

Bus	Stagecoach in South Wales Stagecoach West Newport Transport

National Cycle Network	Celtic Trail National Cycle Route 4 National Cycle Route 47 National Cycle Route 42

Railway lines	South Wales Main Line Gloucester to Newport Line Welsh Marches Line

Railway stations	Abergavenny Caldicot Chepstow Severn Tunnel Junction

Waterways	Monmouthshire & Brecon Canal River Wye

Transport in Torfaen

Road

Bus	Stagecoach in South Wales Newport Transport

Railway lines	Welsh Marches Line

Railway stations	Cwmbran Pontypool and New Inn

Heritage Railways	Pontypool and Blaenavon Railway

Cycle	Celtic Trail NCR 49 NCR 423 NCR 466 NCR 492

Walk	Cambrian Way Celtic Way Cistercian Way

Waterways	Monmouthshire & Brecon Canal Pontymoile Basin

Coordinates: 51°41′03″N 3°06′47″W / 51.6841°N 3.11308°W / 51.6841; -3.11308

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