Crash View

Single lane running

Cleared

single lane running

Start time
Tue, Oct 6, 2026 7:00 PM
Expected end
Wed, Oct 7, 2026 5:00 AM
Duration
35 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
Live incident
Active roadworks
Planned
Cleared
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First published
Mon, Sep 21, 2026 10:32 AM
Last updated
Tue, Oct 6, 2026 7:08 PM
Cleared
Tue, Oct 6, 2026 7:35 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
Planned
Overall feed start
Tue, Oct 6, 2026 7:00 PM
Overall feed end
Wed, Oct 7, 2026 5:00 AM
Feed window length
10 hours
Probability code (raw)
probable
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
Probable
Validity status
Planned
Road management
Other
Feed provider
National Highways
Data source
Roadworks
Feed version
1
Record created
Mon, Sep 21, 2026 10:32 AM
Record versioned
Tue, Oct 6, 2026 7:08 PM
Coordinate source
Geometry

Driving on the M4? See every live closure, roadwork and planned restriction on this road.

M4 live closures

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Started Start time TBC

Description: 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

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