M4 Junctions
Browse all junctions on the M4 motorway and check for road closures near each junction.
J1Junction 1
Kew, Greater London
J2Junction 2
Brentford, Greater London
J3Junction 3
Cranford, Greater London
J4Junction 4
West Drayton, Greater London
J4AConcorde Roundabout
West Drayton, Greater London
J4BThorney
Slough, Greater London
J5Junction 5
Colnbrook, M1
J6Junction 6
Slough, M1
J7Junction 7
Burnham, Buckinghamshire
J8Holyport
Maidenhead, Windsor and Maidenhead
J9Holyport
Maidenhead, Windsor and Maidenhead
J10Junction 10
Wokingham, Borough of Wokingham
J11Three Mile Cross
Reading, Reading
J12Theale
Theale, West Berkshire
J13Chieveley Interchange
Chieveley, West Berkshire
J14Wickham Interchange
Hungerford, West Berkshire
J15Plough Hill Interchange
Swindon, Wiltshire
J17Stanton St Quintin
Stanton St Quintin, Wiltshire
J18Tormarton Interchange
West Littleton, South Gloucestershire
J19Hambrook
Hambrook, South Gloucestershire
J20Almondsbury
Woodlands, South Gloucestershire
J21Awkley Interchange
Tockington, South Gloucestershire
J22Pilning
Severn Beach, South Gloucestershire
J23Rogiet
Undy, Monmouthshire
J23AMagor
Magor, Monmouthshire
J24Coldra
Newport, Newport
J25Caerleon Interchange
Newport, Newport
J25AGrove Park
Newport, Newport
J26Malpas Interchange
Newport, Newport
J27High Cross
Newport, Newport
J28Tredegar Park
Newport, Newport
J29Castleton
Castleton, Newport
J30Pentwyn
Cardiff, Cardiff
J32Coryton
Cardiff, Cardiff
J33Capel Llanilltern
Llantrisant, Cardiff
J34Miskin
Pendoylan, Vale of Glamorgan
J35Pen-coed
Coychurch, Bridgend County Borough
J36Sarn
Bridgend, Bridgend County Borough
J37Pyle
South Cornelly, Bridgend County Borough
J38Margam
Margam, Neath Port Talbot
J40Taibach
Taibach, Neath Port Talbot
J41Pentyla
Port Talbot, Neath Port Talbot
J42Earlswood
Llandarcy, Neath Port Talbot
J43Llandarcy
Skewen, Neath Port Talbot
J44Lôn-las
Swansea, Swansea
J45Ynysforgan
Ynystawe, Swansea
J46Llangyfelach
Swansea, Swansea
J47Penllergaer
Tircoed, Swansea
J48Hendy
Hendy, Carmarthenshire
J49Pont Abraham
Llanedi, Carmarthenshire
About M4 Junctions
The M4 motorway has 50 junctions connecting it to the surrounding road network. Each junction page provides real-time information about road closures and disruptions within 1 mile of that junction.
Use the search bar above to quickly find a specific junction by number, nearby town, or county. Click any junction to see current closures, planned roadworks, and traffic disruptions near that location.