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Monmouthshire Council

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Monmouthshire County Council
Cyngor Sir Fynwy
Location Map ( geo)
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Primary Destinations
Abergavenny • Chepstow • Monmouth
Other Important Destinations
Blaenau Gwent • Gloucestershire • Herefordshire • Newport • Powys • Torfaen
Welsh Government Roads
M4 • M48 • A40 • A449 • A465 • A4042

Monmouthshire County Council is the Highway Authority responsible for all public roads in the Monmouthshire principal area other than those managed by the South Wales Trunk Road Agent (SWTRA) on behalf of the Welsh Government.

Primary Destinations

The following Primary Destinations are located within the council area:

Trunk Roads

The following roads that run through the council area are at least partially Trunk Roads, and therefore managed by the South Wales Trunk Road Agent:

Principal and Classified Numbered Roads

The following is a list of A and B classified roads that are at least partially managed by the council:

Route From To Length


A48 Highnam, Gloucester Carmarthen 119 miles View
A466 King's Thorn Chepstow Interchange 30 miles View
A472 Usk Abercynon 23.7 miles View
A4077 Glanbaiden Crickhowell 4.4 miles View
A4136 Huntley Monmouth 16.6 miles View
A4143 Llanfoist Abergavenny 0.7 miles View
A4810 Magor Liswerry 5.5 miles View   
B4233 Abergavenny Monmouth 14.2 miles View
B4235 Usk (E) Chepstow 11.7 miles View
B4245 Langstone Parkwall Roundabout 9.9 miles View
B4246 Pontnewynydd Abergavenny 12.8 miles View
B4248 Blaenavon Brynmawr 4.5 miles View
B4269 Llanfoist Llanellen 1.9 miles View
B4293 Monmouth Chepstow 16.2 miles View
B4347 Vowchurch Rockfield 19.1 miles View
B4521 Abergavenny Old Pike, Peterstow 18.9 miles View
B4598 Abergavenny Usk 9.7 miles View     

Classified Unnumbered (Class III) Roads

Main Article: Monmouthshire Council (Class III roads)

For their Class III road network, Monmouthshire Borough Council appear to use "R" prefixes.


Main Article: Monmouthshire Council (Junctions)

Bridges, Tunnels, and other Crossings

Main Article: Monmouthshire Council (Crossings)


Monmouthshire Council
A48 • A466 • A472 • A4077 • A4136 • A4143 • A4810 • B4233 • B4235 • B4245 • B4246 • B4248 • B4269 • B4293 • B4347 • B4521 • B4598
Highways Authorities in Wales
Trunk Road AgentsNorth & Mid Wales TRA • South Wales TRA
Principal AreasBlaenau Gwent • Bridgend • Caerphilly • Cardiff • Carmarthenshire • Ceredigion • Conwy • Denbighshire • Flintshire • Gwynedd • Isle of Anglesey • Merthyr Tydfil • Monmouthshire • Neath Port Talbot • Newport • Pembrokeshire • Powys • Rhondda Cynon Taf • Swansea • Torfaen • Vale of Glamorgan • Wrexham

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