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Welsh Government (Junctions)

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This is a list of Welsh trunk road junctions.


Name Location Roads Type
Abercanaid Roundabout Abercanaid A470, A4060 Roundabout
Aberdulais Interchange Aberdulais A465, A4109, A4230, B4434
Abergwili Roundabout Abergwili A40 Roundabout
Abergwyngregyn Interchange Abergwyngregyn A55 LILO
Abernant Interchange Abernant A449 Modified Diamond
Ael y Bowl Interchange Llanfair Pwllgwyngyll A55, A5025 Diamond
Alltami Junction Ewloe Green A55, A494 Fork
Bala Junction Dolgellau A470, A494 T-junction
Blackbridge Roundabout Whitland A40 Roundabout
Bodelwyddan Interchange Bodelwyddan A55 LILO
Bontnewydd roundabout Bontnewydd A487 Roundabout
Bridge Street Interchange Ynysangharad A470, A4223 Modified Roundabout Interchange
Broadway Interchange Ynysanharai A470, A4058 Modified Roundabout Interchange
Brookside Interchange Northop A55, B5125, B5126 Offslip + LILO
Brynmawr Junction Pontygof A465, A467, A4047 Roundabout (GSJ under construction)
Caerleon Interchange St Julians, Newport M4, A4042, B4596 Modified Roundabout Interchange
Caernarfon Road Interchange Goetre A55, A4087 Diamond
Canaston Bridge Roundabout Canaston Bridge A40, A4075, B4314 Roundabout
Cardiff West Interchange Capel Llanilltern M4, A4232 Roundabout Interchange
Carmeltown Roundabout Rassau A465, A4281 Roundabout
Carreg Bran Interchange Llanfair Pwllgwyngyll A5, A55 Half diamond
Castleton Interchange Castleton M4, A48(M) Fork
Cefn Coed Roundabout Cefn Coed A465, A470 Roundabout
Cefn Du Interchange Gaerwen A55, A5152 Diamond
Cemmaes Road Roundabout Glantwymyn A470, A489 mini roundabout
Cibyn roundabout Cibyn A487, A4086 Roundabout
Coldra Interchange Coldra, Newport (NE) M4, A48, A449, B4237 Grade-separated hamburger
Colwyn Bay Interchange Colwyn Bay A55, B5113 Diamond
Conway Road Interchange Colwyn Bay A55, A547, B5113, B5115 Modified Diamond
Coopers Corner (Aberystwyth) Aberystwyth A44, A487 T-junction
Coryton Interchange Tongwynlais M4, A470, A4054 3-level stacked roundabout
Cross Foxes Cross Foxes, Dolgellau (E) A470, A487 T-junction
Cross Hands Roundabout Llanelli A48, A476 Roundabout
Crossgates roundabout Crossgates A44, A483 Roundabout
Cwmgwarach Roundabout Blaengwrach A465, B4242 Roundabout
Dalar Hir Interchange Caergeiliog A5, A55 Dumbbell
Dobshill Interchange Dobshill A55, A550 Roundabout interchange
Dolphin Junction Pentre Halkyn A55, A5026, B5123 Offslips
Dowlais Top Roundabout Dowlais Top A465, A4060 Roundabout
Druid Junction Druid A5, A494
Dwygyfylchi Junction A55 T-junction
Eagles junction Caernarfon A487, A4085 One-way system
Earlswood Interchange Earls Wood M4, A48, A483 Modified trumpet
Ebbw Vale East Junction Waun Rydd A465, A4281 Fork
Ebbw Vale West Junction Bryn-Serth A465, A4046 Fork & Roundabouts
Ewloe Interchange Ewloe A55, A494 Trumpet
Faenol Interchange Abergele A55, A547 Roundabout Interchange
Gellideg roundabout Gellideg A470, A4102 Roundabout
Gilwern Junction Gilwern A465, A4077 T-Junctions (GSJ under construction)
Glan Conwy Interchange Glanconwy A55, A470, A547, B5381 Roundabout Interchange + Roundabout
Glan Menai Junction Llanfair Pwllgwyngyll A5, A55 Offslip
Glanbaiden Roundabout Gilwern (E) A465, A4077, B4246 Roundabout
Glynneath Interchange Glynneath A465, A4109 Trumpet
Glyntaff Interchange Glyntaff A470, A4054, B4595 Modified Roundabout Interchange
Goat roundabout Pitian Patian A487, A499 Roundabout
Gresford Interchange Little Acton A483, A5152, A5156, B5445 Roundabout interchange
Groes Interchange Margam (SE) M4, A48 On-slip
Grove Park Interchange St Julians, Newport M4, A4042 Fork
Gwernymynydd Roundabout Gwernymynydd (E) A494, A5119 Roundabout
Hardwick Gyratory Abergavenny (SSE) A40, A465, A4042, B4598 Gyratory
Hendy Interchange Hendy M4, A4138 Diamond
High Cross Interchange High Cross, Newport M4, B4591 Parclo/Roundabout Hybrid
Hirwaun Roundabout Hirwaun A465, A4059 Roundabout
Johnstown Interchange Edisbury Grange A483, B5406 Diamond
Kingsland Roundabout Kingsland A55, B4545 Roundabout
Llanboidy Road Roundabout Whitland (E) A40, B4328 Roundabout
Llandarcy Interchange Pen-yr-heol M4, A465, B4290 Roundabout interchange
Llandeilo Roundabout Llandeilo A40, A483 Roundabout
Llandudno Junction Interchange Llandudno Junction A55, A546 Roundabout Interchange
Llanddulas Interchange Llanddulas A55, A547 Parclo
Llanfairfechan Roundabout Penmaen Park A55 Roundabout
Llanfoist Junction Llanfoist A465, A4143, B4246 Modified dumbbell
Llangurig roundabout Llangurig A44, A470 Roundabout
Llangyfelach Interchange Llangyfelach M4, A48, B4489 Dumbbell
Llanidloes roundabout Llanidloes A470, B4518 Roundabout
Llys y Gwynt Interchange Coed Hywel A5, A55 Roundabout Interchange
Llyswen junction Llyswen A470, A479 T-junction
Lon-Las Interchange Lon-las M4, A48, A4230, B4291 Modified Roundabout Interchange
Lovesgrove Roundabout Capel Bangor (W) A44, A4159 Roundabout
Madryn Interchange Gorddinog A55 LILO
Magor Interchange Magor M4, A4810 Roundabout Interchange + Modified Parclo
Mallwyd Mallwyd A458, A470 roundabout
Malpas Interchange Brynglas, Newport M4, A4051 Roundabout Interchange
Margam Interchange Margam M4, A48
Meiford roundabout Meiford A487 Roundabout
Minffordd roundabout Minfford A487, A497 Roundabout
Miskin Interchange Miskin M4, A4119 Roundabout Interchange
Moat Lane Junction Caersws A470, A489 Staggered Crossroads bisected by level crossing
Nant Turnpike Interchange Llangefni (SW) A5, A55, A5114 Dumbbell
Nantgarw Interchange Nantgarw A468, A470, A4054 Roundabout Interchange
Neath Abbey Interchange Neath A465, A474 Roundabout Interchange
New Brighton Roundabout New Brighton A494, A5119 Roundabout
Newhouse Chepstow M48, A466 Roundabout
Northop Interchange Northrop A55, A5119 Dumbbell
Old Colwyn Interchange Old Colwyn A55 Diamond
Pant Interchange Galon Uchaf A465
Pant-y-Dulath Interchange Glan Llyn A55 LILO
Pencoed Interchange Pencoed M4, A473 Roundabout Interchange
Penllergaer Interchange Penllegaer M4, A48, A483 Roundabout Interchange
Penmaenmawr Junction Penmaen A55 Offslip + Onslip
Pensarn Interchange Pensarn, Abergele A55, A548
Pensarn Roundabout Pensarn, Carmarthen A40, A48, A484 Roundabout
Pentrebach Roundabout Pentre-bach A4054, A4060 Roundabout
Pentwyn Interchange Ingleside M4, A4232 Roundabout Interchange
Pentyla Interchange Baglan M4, A48, A4241, B4286 Half Diamond + Fork with spur to roundabout
Plas Menai roundabout Griffiths Crossing A487 Roundabout
Plough Lane Interchange Aston A494 LILO
Pont Abraham Interchange Pont Abraham M4, A48, A483 Roundabout
Pont Dafydd Junction St Asaph (NE) A55, A525 LILO
Pont Seiont roundabout Caernarfon A4871 Roundabout
Porthmadog roundabout Bodawen A487, A4971 Roundabout
Puffin Roundabout Dwygyfylchi A55 Roundabout
Pyle Interchange North Cornelly M4, A4229 Roundabout Interchange
Queensferry Interchange Queensferry A494, A550, B5129 Roundabout Interchange
Rassau Industrial Estate Junction Rassau Industrial Estate A465 Half Diamond
Resolven Roundabout Resolven A465, B4434 Roundabout
Rhigos Roundabout Hirwaun A465, A4059, A4061 Roundabout
Rhyd-y-car roundabout Rhyd-y-car A470, A4102 Roundabout
Rhymney Interchange Llechryd A465, A469, B4257 Dumbbell
Robeston Wathen Roundabout A40, B4314 Roundabout
Rogiet Interchange Llanfihangel near Rogiet M4, M48 Fork
Rossett Interchange Burton A483, B5102 Dumbbell
Ruthin Road Interchange Wrexham A483, A525 Diamond
Saleyard Junction Saleyard A465 T-junctions (GSJ under construction)
Sarn Bryn Caled Roundabout Sarn-y-bryn-caled A458, A483, A490 Roundabout
Sarn Interchange Sarn M4, A4061, A4063 Modified dumbbell
Skenfrith Junction Maindiff A465, B4521 Echline Junction
Southgate Roundabout (Aberystwyth) Southgate A487, A4120 Roundabout
Square and Compass Ashfield A40, A4069 Roundabout
St Davids Park Interchange Ewloe Green A494, B5125, B5127 Roundabout Interchange
St Davids roundabout Caernarfon A4871, B4419 Roundabout
St Georges Interchange (Denbighshire) Plas Cinmel A55 Offslip
St Mellons Junction St Mellons A48(M), A48, B4487 Fork + Roundabout
Taffs Well Interchange Tongwynlais A470, A4054, B4262 Modified Roundabout Interchange
Taibach Interchange Taibach M4, A4107 Roundabout Interchange
Tal y Bont Interchange Tan-y-lon A55
Talardy Junction St Asaph A55, A525 Roundabout Interchange
Tarell roundabout Tarell A40, A470, B4601 Roundabout
The Old Station roundabout Welshpool Station A483, B4381 Roundabout
Travellers Inn Junction Cae Rhys A55 T-junction
Treban Interchange Engedi A55, A4080 Dumbbell
Treborth Interchange Treborth A55, A487 Folded dumbbell
Tredegar Junction Tredegar A465, A4048 Roundabout Interchange
Tredegar Park Interchange Tredegar Park, Newport M4, A48, A467 Modified Roundabout Interchange
Tremadog roundabout Tremadog A487, A498 Roundabout
Ty Mawr Interchange Kingsland A55, A5153 Dumbbell
Upper Boat Interchange Treforest A470, A473, A4054 Roundabout Interchange
Usk Interchange Llangeview A449, A472, B4235 Trumpet
Waen Interchange nr Rhuallt A55, B5429 LILO
Warren Interchange Broughton A55, A5104 Dumbbell
Wylfa Roundabout Pentre A494, A541, A549 Roundabout
Y Felinheli roundabout A487, A4087, B4547 Roundabout
Ynysforgan Interchange Ynysforgan M4, A4067, B4603 Roundabout Interchange
Mold Road Interchange Plas Coch A483, A541 Roundabout interchange
Croesfoel Interchange Rhostyllen A483, A5152, B5605 Roundabout interchange
Billy Jean's Pentre Halkyn A55, B5123 3/4 Diamond
Brynich roundabout Brecon A40, A470, B4601 Roundabout
Halton Roundabout Halton A5, A483 Roundabout
Llanbadarn Fawr East of Aberystwyth A44, A4120 Offset Crossroads
Culverhouse Cross roundabout Culverhouse Cross A48, A4050, A4232 Roundabout interchange
Abercynon Roundabout Abercynon A40, A472, A4059 Roundabout
Whitehurst Roundabout Chirk A5, B5070 Roundabout
Penblewin roundabout North of Narberth A40, A478 Roundabout
Edlogan Way Roundabout Croesyceiliog A4042 Roundabout
Cwmbrân Roundabout Pont-y-felin A4042, A4051 Roundabout
Pontypool Roundabout Pontypool (SE) A472, A4042 Roundabout
Court Farm Roundabout A4042 Roundabout
Rafael roundabout South of Fishguard A40, A487 Roundabout
Scotchwell roundabout Haverfordwest (E) A40 Roundabout
Windyhall roundabout Goodwick A40, A487 Roundabout
Withybush roundabout Withybush, Haverfordwest (N) A40 Roundabout
St Asaph Business Park Junction St Asaph Business Park A55 Dumbbell
Conwy Morfa Interchange Conwy A55, A547 Diamond
Gabalfa Interchange Cardiff A48, A469, A470 Three-Level Stacked Roundabout
Broughton Junction Broughton A55 Fork
Ruabon Interchange Ruabon A483, A539 Dumbbell
Broughton Roundabout (Flintshire) Broughton A5104, B5125 Roundabout
Travellers Rest (Carmarthen) Johnstown, Carmarthen A40
Pont Lesneven roundabout Carmarthen A40, A4242 Roundabout
Raglan Interchange Raglan (E) A40, A449 Trumpet
Drome Corner Drome Corner A494, A548, B5441 Dumbbell
Deeside Industrial Park Interchange Deeside Industrial Park A494, A548, A550, B5441 Roundabout interchange + Forks
Raglan Roundabout Raglan A40 Roundabout
Highbeech Roundabout Chepstow A48, A466 Roundabout
Caerwys Interchange Lloc (SW) A55, A5026, A5151, B5122 Dumbbell
Pen Caledog Interchange Valley (E) A5, A55 Dumbbell
St Clears Roundabout St. Clears A40, A477, A4066 Roundabout
Raven Roundabout Welshpool A458, A490 Roundabout
Dixton Roundabout Dixton A40, A466 Roundabout
Meadows Bridge Interchange Cross Hands A48 Dumbbell
Ferry Road Interchange Cardiff A4232, A4055 Roundabout interchange
Queens Gate junction Cardiff A4232, A4234 Roundabout interchange
Ocean Way Roundabout Cardiff A4232 Roundabout interchange




Welsh Government
Projects
Roads
A5 • A40 • A44 • A48 • A48(M) • A55 • A449 • A458 • A465 • A466 • A470 • A477 • A479 (Crickhowell - Llyswen) • A483 • A487 • A489 • A494 • A550 • A4042 • A4060 • A4076 • A4232 • E30 • Ffordd Arfordirol • Ffordd Cambria • Ffordd Gogledd Cymru • M4 • M48 • Maelor Tour
Miscellaneous
Junctions by Highway Authority
EnglandBarnsley • Bracknell Forest • Bath & NE Somerset • Bedford • Birmingham • Blackburn with Darwen • Blackpool • Bolton • Bournemouth, Christchurch and Poole • Bradford • Brighton & Hove • Bristol • Buckinghamshire • Bury • Calderdale • Cambridgeshire • Central Bedfordshire • Cheshire East • Cheshire West & Chester • Cornwall • Coventry • Cumberland • Darlington • Derby • Derbyshire • Devon • Doncaster • Dorset • Dudley • Durham • East Riding of Yorkshire • East Sussex • Essex • Gateshead • Gloucestershire • Halton • Hampshire • Hartlepool • Herefordshire • Hertfordshire • Isle of Wight • Isles of Scilly • Kent • Kingston upon Hull • Kirklees • Knowsley • Lancashire • Leeds • Leicester • Leicestershire • Lincolnshire • Liverpool • Luton • Manchester • Medway • Middlesbrough • Milton Keynes • Newcastle upon Tyne • Norfolk • North East Lincolnshire • North Lincolnshire • North Northamptonshire • North Somerset • North Tyneside • North Yorkshire • Northumberland • Nottingham • Nottinghamshire • Oldham • Oxfordshire • Peterborough • Plymouth • Portsmouth • Reading • Redcar & Cleveland • Rochdale • Rotherham • Rutland • Salford • Sandwell • Sefton • Sheffield • Shropshire • Slough • Solihull • Somerset • South Gloucestershire • South Tyneside • Southampton • Southend-on-Sea • St Helens • Staffordshire • Stockport • Stockton-on-tees • Stoke-on-Trent • Suffolk • Sunderland • Surrey • Swindon • Tameside • Telford & Wrekin • Thurrock • Torbay • Trafford • Wakefield • Walsall • Warrington • Warwickshire • West Berkshire • Westmorland and Furness • West Northamptonshire • West Sussex • Wigan • Wiltshire • Windsor & Maidenhead • Wirral • Wokingham • Wolverhampton • Worcestershire • York
Greater LondonTransport for London • Barking & Dagenham • Barnet • Bexley • Brent • Bromley • Camden • The City • Croydon • Ealing • Enfield • Greenwich • Hackney • Hammersmith & Fulham • Haringey • Harrow • Havering • Hillingdon • Hounslow • Islington • Kensington & Chelsea • Kingston upon Thames • Lambeth • Lewisham • Merton • Newham • Redbridge • Richmond upon Thames • Southwark • Sutton • Tower Hamlets • Waltham Forest • Wandsworth • Westminster
ScotlandAberdeen City • Aberdeenshire • Angus • Argyll & Bute • Borders • Clackmannanshire • Dumfries & Galloway • Dundee • Eilean Siar • East Ayrshire • East Dunbartonshire • East Lothian • East Renfrewshire • Edinburgh • Falkirk • Fife • Glasgow • Highland • Inverclyde • Midlothian • Moray • North Ayrshire • North Lanarkshire • Orkney • Perth & Kinross • Renfrewshire • Shetland • South Ayrshire • South Lanarkshire • Stirling • West Dunbartonshire • West Lothian
WalesBlaenau 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
IrelandCarlow • Cavan • Clare • Cork City • Cork County • Donegal • Dublin • Dún Laoghaire - Rathdown • Fingal • Galway City • Galway County • Kerry • Kildare • Kilkenny • Laois • Leitrim • Limerick • Longford • Louth • Mayo • Meath • Monaghan • Offaly • Roscommon • Sligo • South Dublin • Tipperary • Waterford • Westmeath • Wexford • Wicklow
OtherIsle of Man • Jersey • Northern Ireland • National Highways • Welsh Government • Transport Infrastructure Ireland • Transport Scotland

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