Skip to main content
English
Cymraeg
Search
Search
Hide
Yellow weather warning for wind 22/12/24 00:00-21:00.
Travel advice for driving in strong winds
0300 123 1213
[email protected]
Rydym yn croesawu galwadau’n Gymraeg. We welcome calls in Welsh.
Rydym yn croesawu galwadau’n Gymraeg. We welcome calls in Welsh.
Menu
Home
Travel
Roadworks North
Roadworks Mid
Roadworks South
Traffic alerts
Map
CCTV
About us
Traffic Wales
Traffic officers
NMWTRA
SWTRA
Road Safety
High Winds A5 Ceiriog and A483 Dee Viaduct
High Winds on Britannia Bridge
Road Ready
Travelling to Events
Tunnel Safety
Weather
Help & Contact
Contact us
M4
Home
M4
Jump to key locations
Junction 24 Coldra
Junction 29 Castleton
Junction 32 Coryton
Junction 35 Pencoed
Junction 43 Llandarcy
Junction 49 Pont Abraham
Open
Share
share
share
share
M4
J22-23 Prince of Wales Bridge West (Eastbound)
Open
Share
share
share
share
M4
Toll Plaza East (Westbound)
Open
Share
share
share
share
M4
Toll Plaza West (Westbound)
Open
Share
share
share
share
M4
J23 Rogiet (Westbound)
Open
Share
share
share
share
M4
Magor East (Westbound)
Open
Share
share
share
share
M4
J23A Magor (Westbound)
Open
Share
share
share
share
M4
Magor West (Eastbound)
Open
Share
share
share
share
M4
Wilcrick (Westbound)
Open
Share
share
share
share
M4
Llanmartin (Westbound)
Open
Share
share
share
share
M4
Langstone (Westbound)
Jump to
A449
Open
Share
share
share
share
M4
J24 Coldra (Eastbound)
Jump to
A449
Open
Share
share
share
share
M4
Coldra East (Westbound)
Open
Share
share
share
share
M4
Coldra West (Eastbound)
Open
Share
share
share
share
M4
Christchurch East (Eastbound)
Open
Share
share
share
share
M4
Christchurch West (Westbound)
Open
Share
share
share
share
M4
St Julians (Eastbound)
Open
Share
share
share
share
M4
St Julians East (Eastbound)
Open
Share
share
share
share
M4
Caerleon East (Westbound)
Open
Share
share
share
share
M4
J25 Caerleon (Eastbound)
Open
Share
share
share
share
M4
J25A Grove Park / A4042 (Eastbound)
Open
Share
share
share
share
M4
J26 Malpas (Eastbound)
Open
Share
share
share
share
M4
Malpas Straight (Eastbound)
Open
Share
share
share
share
M4
Allt-yr-yn (Eastbound)
Open
Share
share
share
share
M4
High Cross East (Eastbound)
Open
Share
share
share
share
M4
J27 High Cross (Eastbound)
Open
Share
share
share
share
M4
Bassaleg (Westbound)
Open
Share
share
share
share
M4
J28 Tredegar Park (Westbound)
Jump to
A48M
Open
Share
share
share
share
M4
Cleppa Park (Westbound)
Jump to
A48M
Open
Share
share
share
share
M4
Pound Hill (Westbound)
Open
Share
share
share
share
M4
J29 Castleton (Westbound)
Open
Share
share
share
share
M4
J29 - J30 Eastbound
Open
Share
share
share
share
M4
J29 - J30 Michaelston-y-Fedw (Westbound)
Open
Share
share
share
share
M4
J29 - J30 Began (Westbound)
Open
Share
share
share
share
M4
J30 Cardiff Gate (Westbound) 1
Open
Share
share
share
share
M4
J30 - J32 Pontprennau (Westbound)
Open
Share
share
share
share
M4
J30 - J32 Lisvane (Westbound)
Open
Share
share
share
share
M4
J30 - J32 Thornhill (Westbound)
Open
Share
share
share
share
M4
J30 - J32 Rhiwbina (Westbound)
Open
Share
share
share
share
M4
J32 Pantmawr
Open
Share
share
share
share
M4
J32 Eastbound Onslip
Open
Share
share
share
share
M4
J32 West of Whitchurch
Jump to
A470
Open
Share
share
share
share
M4
J32 Tongwynlais Spur
Jump to
A470
Open
Share
share
share
share
M4
J32 Northbound Onslip from A470
Open
Share
share
share
share
M4
West of J32 Coryton (Westbound)
Open
Share
share
share
share
M4
J32 Eastbound Offslip
Open
Share
share
share
share
M4
J33 - 32 Morganstown (Eastbound)
Open
Share
share
share
share
M4
J32 - J33 Radyr (Eastbound)
Open
Share
share
share
share
M4
Rhydlafar
Open
Share
share
share
share
M4
Capel East
Open
Share
share
share
share
M4
J33 Westbound Approach
Open
Share
share
share
share
M4
J33 Capel Llanilltern (Westbound)
Open
Share
share
share
share
M4
West of J33 Capel Llanilltern
Open
Share
share
share
share
M4
West of J33 Capel Llanilltern
Open
Share
share
share
share
M4
Groes-Faen
Open
Share
share
share
share
M4
Miskin
Open
Share
share
share
share
M4
J35 - J34 Miskin (Eastbound)
Open
Share
share
share
share
M4
J34 - 35 Pontyclun (Eastbound)
Open
Share
share
share
share
M4
J35 Pencoed (Eastbound)
Open
Share
share
share
share
M4
Sarn East
Open
Share
share
share
share
M4
J36 Sarn (Westbound)
Open
Share
share
share
share
M4
Sarn West
Open
Share
share
share
share
M4
Court Colman
Open
Share
share
share
share
M4
Stormy Down (Westbound)
Open
Share
share
share
share
M4
J37 Pyle (Westbound)
Open
Share
share
share
share
M4
Kenfig (Westbound)
Open
Share
share
share
share
M4
J38 Margam (Eastbound)
Open
Share
share
share
share
M4
J39 Groes (Eastbound)
Open
Share
share
share
share
M4
Groes West (Westbound)
Open
Share
share
share
share
M4
Taibach East (Eastbound)
Open
Share
share
share
share
M4
J40 Taibach (Westbound)
Open
Share
share
share
share
M4
Taibach West (Westbound)
Open
Share
share
share
share
M4
J41 Pentyla (Westbound)
Open
Share
share
share
share
M4
Sunnycroft (Westbound)
Open
Share
share
share
share
M4
Briton Ferry East (Eastbound)
Open
Share
share
share
share
M4
Briton Ferry West (Westbound)
Open
Share
share
share
share
M4
J42 Earlswood (Eastbound)
Open
Share
share
share
share
M4
J43 Llandarcy (Eastbound)
Open
Share
share
share
share
M4
J43 Llandarcy (Eastbound)
Open
Share
share
share
share
M4
M4 - J43 Llandarcy (West)
Open
Share
share
share
share
M4
J44 Lon Las (Eastbound)
Open
Share
share
share
share
M4
Lon Las East (Westbound)
Open
Share
share
share
share
M4
J45 Ynysforgan (Eastbound)
Open
Share
share
share
share
M4
J45 - J46 Morriston Hospital (Eastbound)
Open
Share
share
share
share
M4
J46 Llangyfelach (Eastbound)
Open
Share
share
share
share
M4
J47 Penllergaer (Eastbound)
Open
Share
share
share
share
M4
J48 Hendy (Westbound)
Open
Share
share
share
share
M4
Dyffryn Farm
Open
Share
share
share
share
M4
J49 Pont Abraham
M4
J22-23 Prince of Wales Bridge West (Eastbound)
M4
Toll Plaza East (Westbound)
M4
Toll Plaza West (Westbound)
M4
J23 Rogiet (Westbound)
M4
Magor East (Westbound)
M4
J23A Magor (Westbound)
M4
Magor West (Eastbound)
M4
Wilcrick (Westbound)
M4
Llanmartin (Westbound)
M4
Langstone (Westbound)
M4
J24 Coldra (Eastbound)
M4
Coldra East (Westbound)
M4
Coldra West (Eastbound)
M4
Christchurch East (Eastbound)
M4
Christchurch West (Westbound)
M4
St Julians (Eastbound)
M4
St Julians East (Eastbound)
M4
Caerleon East (Westbound)
M4
J25 Caerleon (Eastbound)
M4
J25A Grove Park / A4042 (Eastbound)
M4
J26 Malpas (Eastbound)
M4
Malpas Straight (Eastbound)
M4
Allt-yr-yn (Eastbound)
M4
High Cross East (Eastbound)
M4
J27 High Cross (Eastbound)
M4
Bassaleg (Westbound)
M4
J28 Tredegar Park (Westbound)
M4
Cleppa Park (Westbound)
M4
Pound Hill (Westbound)
M4
J29 Castleton (Westbound)
M4
J29 - J30 Eastbound
M4
J29 - J30 Michaelston-y-Fedw (Westbound)
M4
J29 - J30 Began (Westbound)
M4
J30 Cardiff Gate (Westbound) 1
M4
J30 - J32 Pontprennau (Westbound)
M4
J30 - J32 Lisvane (Westbound)
M4
J30 - J32 Thornhill (Westbound)
M4
J30 - J32 Rhiwbina (Westbound)
M4
J32 Pantmawr
M4
J32 Eastbound Onslip
M4
J32 West of Whitchurch
M4
J32 Tongwynlais Spur
M4
J32 Northbound Onslip from A470
M4
West of J32 Coryton (Westbound)
M4
J32 Eastbound Offslip
M4
J33 - 32 Morganstown (Eastbound)
M4
J32 - J33 Radyr (Eastbound)
M4
Rhydlafar
M4
Capel East
M4
J33 Westbound Approach
M4
J33 Capel Llanilltern (Westbound)
M4
West of J33 Capel Llanilltern
M4
West of J33 Capel Llanilltern
M4
Groes-Faen
M4
Miskin
M4
J35 - J34 Miskin (Eastbound)
M4
J34 - 35 Pontyclun (Eastbound)
M4
J35 Pencoed (Eastbound)
M4
Sarn East
M4
J36 Sarn (Westbound)
M4
Sarn West
M4
Court Colman
M4
Stormy Down (Westbound)
M4
J37 Pyle (Westbound)
M4
Kenfig (Westbound)
M4
J38 Margam (Eastbound)
M4
J39 Groes (Eastbound)
M4
Groes West (Westbound)
M4
Taibach East (Eastbound)
M4
J40 Taibach (Westbound)
M4
Taibach West (Westbound)
M4
J41 Pentyla (Westbound)
M4
Sunnycroft (Westbound)
M4
Briton Ferry East (Eastbound)
M4
Briton Ferry West (Westbound)
M4
J42 Earlswood (Eastbound)
M4
J43 Llandarcy (Eastbound)
M4
J43 Llandarcy (Eastbound)
M4
M4 - J43 Llandarcy (West)
M4
J44 Lon Las (Eastbound)
M4
Lon Las East (Westbound)
M4
J45 Ynysforgan (Eastbound)
M4
J45 - J46 Morriston Hospital (Eastbound)
M4
J46 Llangyfelach (Eastbound)
M4
J47 Penllergaer (Eastbound)
M4
J48 Hendy (Westbound)
M4
Dyffryn Farm
M4
J49 Pont Abraham
Connect with Traffic Wales
@TrafficWalesN
@TrafficWalesS
TrafficWalesN
TrafficWalesS
@trafficwalestraffigcymru
Give feedback about this page