A472 road

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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[edit]

A472
Eastbound exits Junction / Interchange Westbound exits
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
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
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

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