Single lane running
Clearedsingle lane running
- Start time
- Tue, Oct 6, 2026 6:41 PM
- Expected end
- Wed, Oct 7, 2026 5:00 AM
- Duration
- 5 hours 4 minutes 2 seconds
- Road
- M4 – M4 Eastbound Between J19 And J18
- Category
- Road Maintenance
- Direction
- Eastbound
- Carriageway
- Dual Carriageway
- Lanes affected
- 2 of 2 lanes affected
- Reason
- Maintenance Work
Move Insights
Thinking of moving to this area?
Check flood risk, planning history, EPC ratings and more with a Move Insights property report.
- First published
- Tue, Oct 6, 2026 6:41 PM
- Last updated
- Tue, Oct 6, 2026 11:09 PM
- Cleared
- Tue, Oct 6, 2026 11:45 PM
- Latest update: single lane running
- Coordinates
- 51.499321, -2.446783
- Latitude span
- 51.497875 – 51.501703
- Longitude span
- -2.461449 – -2.429391
- Bounding box centre
- 51.499789, -2.445420
- Location descriptions
-
- M4 eastbound between J19 and J18
- Feed validity status
- Active
- Overall feed start
- Tue, Oct 6, 2026 6:41 PM
- Overall feed end
- Wed, Oct 7, 2026 5:00 AM
- Feed window length
- 10 hours 19 minutes
- Probability code (raw)
- certain
- Compliance option (raw)
- mandatory
- Source identification (raw)
- roadworks
- Management type value
- other
- Contra-flow flag (raw)
- false
- Width restriction flag (raw)
- false
- Height restriction flag (raw)
- false
- Weight restriction flag (raw)
- false
Segment 1
23 coordinate pairs- Description
- M4 eastbound between J19 and J18
- Carriageway
- Dual Carriageway
- Lanes Restricted
- 2 lanes restricted
- Operational Lanes
- 2 operational lanes
- Direction On Section
- East Bound
- Direction Relative
- Aligned
- Height Grade
- Start2 End1
- Linear Element Road
- M4
- Linear Element Model
- The Network Model
- Linear Element Id
- {ECE92394-6379-4B07-B9E8-82CA83CEA3C5}
- Linear Element Type
- B Carriageway
- From Distance
- 0 m
- To Distance
- 2,101 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
51.501451 -2.46046 51.501115 -2.459102 51.500832 -2.457903 51.500673 -2.457196 51.500416 -2.456055 51.500055 -2.454294 51.499869 -2.453442 51.499675 -2.452446 51.499499 -2.451393 51.499297 -2.450209 51.499139 -2.449185 51.498973 -2.447973 51.498833 -2.447007 51.498511 -2.444238 51.498355 -2.442723 51.498217 -2.441022 51.498012 -2.438067 51.497964 -2.436597 51.49794 -2.435833 51.497916 -2.435084 51.497885 -2.433557 51.497875 -2.43154 51.497877 -2.430949
Segment 2
2 coordinate pairs- Description
- M4 eastbound between J19 and J18
- Carriageway
- Dual Carriageway
- Lanes Restricted
- 2 lanes restricted
- Operational Lanes
- 2 operational lanes
- Direction On Section
- East Bound
- Direction Relative
- Aligned
- Height Grade
- Start1 End1
- Linear Element Road
- M4
- Linear Element Model
- The Network Model
- Linear Element Id
- {AE403C52-5D62-47F7-9FDF-592C93083448}
- Linear Element Type
- B Carriageway
- From Distance
- 0 m
- To Distance
- 108 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
51.497877 -2.430949 51.497888 -2.429391
Segment 3
3 coordinate pairs- Description
- M4 eastbound between J19 and J18
- Carriageway
- Dual Carriageway
- Lanes Restricted
- 2 lanes restricted
- Operational Lanes
- 2 operational lanes
- Direction On Section
- East Bound
- Direction Relative
- Aligned
- Height Grade
- Start1 End2
- Linear Element Road
- M4
- Linear Element Model
- The Network Model
- Linear Element Id
- {D220B0D0-30D4-43FF-9FDC-24DE0B352023}
- Linear Element Type
- B Carriageway
- From Distance
- 866 m
- To Distance
- 941 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
51.501703 -2.461449 51.50169 -2.461398 51.501451 -2.46046
- Geometry type
- MultiLineString
- Geometry points
- 28
- First coordinate pair
- -2.460460, 51.501451
- Road section segments
- 1
- Road section points
- 28
View geometry JSON
{
"type": "MultiLineString",
"coordinates": [
[
[
-2.46046,
51.501451
],
[
-2.459102,
51.501115
],
[
-2.457903,
51.500832
],
[
-2.457196,
51.500673
],
[
-2.456055,
51.500416
],
[
-2.454294,
51.500055
],
[
-2.453442,
51.499869
],
[
-2.452446,
51.499675
],
[
-2.451393,
51.499499
],
[
-2.450209,
51.499297
],
[
-2.449185,
51.499139
],
[
-2.447973,
51.498973
],
[
-2.447007,
51.498833
],
[
-2.444238,
51.498511
],
[
-2.442723,
51.498355
],
[
-2.441022,
51.498217
],
[
-2.438067,
51.498012
],
[
-2.436597,
51.497964
],
[
-2.435833,
51.49794
],
[
-2.435084,
51.497916
],
[
-2.433557,
51.497885
],
[
-2.43154,
51.497875
],
[
-2.430949,
51.497877
],
[
-2.430949,
51.497877
],
[
-2.429391,
51.497888
],
[
-2.461449,
51.501703
],
[
-2.461398,
51.50169
],
[
-2.46046,
51.501451
]
]
]
}
View road section coordinates
[
[
[
-2.46046,
51.501451
],
[
-2.459102,
51.501115
],
[
-2.457903,
51.500832
],
[
-2.457196,
51.500673
],
[
-2.456055,
51.500416
],
[
-2.454294,
51.500055
],
[
-2.453442,
51.499869
],
[
-2.452446,
51.499675
],
[
-2.451393,
51.499499
],
[
-2.450209,
51.499297
],
[
-2.449185,
51.499139
],
[
-2.447973,
51.498973
],
[
-2.447007,
51.498833
],
[
-2.444238,
51.498511
],
[
-2.442723,
51.498355
],
[
-2.441022,
51.498217
],
[
-2.438067,
51.498012
],
[
-2.436597,
51.497964
],
[
-2.435833,
51.49794
],
[
-2.435084,
51.497916
],
[
-2.433557,
51.497885
],
[
-2.43154,
51.497875
],
[
-2.430949,
51.497877
],
[
-2.430949,
51.497877
],
[
-2.429391,
51.497888
],
[
-2.461449,
51.501703
],
[
-2.461398,
51.50169
],
[
-2.46046,
51.501451
]
]
]
- Cause type
- Road Maintenance
- Detailed cause
- Maintenance Work
- Compliance
- Mandatory
- Probability
- Certain
- Validity status
- Active
- Road management
- Other
- Feed provider
- National Highways
- Data source
- Roadworks
- Feed version
- 1
- Record created
- Tue, Oct 6, 2026 6:41 PM
- Record versioned
- Tue, Oct 6, 2026 11:09 PM
- Coordinate source
- Geometry
Driving on the M4? See every live closure, roadwork and planned restriction on this road.
M4 live closuresRelated incidents
M4 eastbound Jct 18 to 17 lane closure (166/5 to 162/1)
Active Roadworks National HighwaysExpected to clear in 2 hours 41 minutes
M4 eastbound Jct 18 to 17 lane closure (166/5 to 162/1)
Contra flow westbound with eastbound closed from Horseshoe Drive
Active Roadworks National HighwaysExpected to clear in 2 months 3 weeks
contra flow westbound with eastbound closed from Horseshoe Drive
A466 : Both directions : M48 J2 Newhouse to A48 Interchange : Resurfacing work : Road closed : Diversions in place : 12/10/26-15/10/26 2000-0600 :
Active Roadworks Traffic WalesDescription: A466 : Both directions : M48 J2 Newhouse to A48 Interchange : Resurfacing work : Road closed : Diversions in place : 12/10/26-15/10/26 2000-0600 :, Start time: 12/10/2026 20:00 , End Date: 15/10/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 09/10/2026 11:57
M4 Eastbound Jct 2 exit slip road closure
Planned Roadworks National HighwaysStarts in 6 hours 41 minutes
M4 Eastbound Jct 2 exit slip road closure
M4 Eastbound Jct 3 to Jct 2 lane 1 closure
Planned Roadworks National HighwaysStarts in 6 hours 41 minutes
M4 Eastbound Jct 3 to Jct 2 lane 1 closure
A40 eastbound lane 2 closure
Planned Roadworks National HighwaysStarts in 5 hours 41 minutes
A40 eastbound lane 2 closure