Crash View

M4 eastbound Jct 20 to Jct 19 lane closure 183/9-180/9

Cleared

M4 eastbound Jct 20 to Jct 19 lane closure 183/9-180/9

Start time
Mon, Sep 14, 2026 8:00 PM
Expected end
Tue, Sep 15, 2026 5:00 AM
Duration
3 hours 25 minutes 2 seconds
Road
M4 – M4 Eastbound Between J20 And J19
Category
Road Maintenance
Direction
Eastbound
Carriageway
Dual Carriageway
Lanes affected
Lane 3 closed, 1 of 3 lanes affected
Reason
Maintenance Work
Live incident
Active roadworks
Planned
Cleared
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First published
Mon, Sep 7, 2026 9:19 AM
Last updated
Mon, Sep 14, 2026 11:01 PM
Cleared
Mon, Sep 14, 2026 11:25 PM
  • Latest update: M4 eastbound Jct 20 to Jct 19 lane closure 183/9-180/9
Coordinates
51.514858, -2.519062
Latitude span
51.506398 – 51.529702
Longitude span
-2.531555 – -2.510830
Bounding box centre
51.518050, -2.521193
Location descriptions
  • M4 eastbound between J20 and J19
  • M4 eastbound within J19
  • M4 eastbound between J19 and J18
Feed validity status
Planned
Overall feed start
Mon, Sep 14, 2026 8:00 PM
Overall feed end
Tue, Sep 15, 2026 5:00 AM
Feed window length
9 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

7 coordinate pairs
Description
M4 eastbound between J20 and J19
Carriageway
Dual Carriageway
Lane Usage
Cl3
Lane Number
3
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
1 lane restricted
Operational Lanes
3 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
{85AC09F6-96DE-494F-B2A9-C8AA2E3DFACC}
Linear Element Type
B Carriageway
From Distance
1,808 m
To Distance
2,343 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.529702 -2.531555
51.529295 -2.531162
51.528777 -2.53066
51.528527 -2.530417
51.526718 -2.52871
51.525734 -2.527798
51.525558 -2.527632

Segment 2

7 coordinate pairs
Description
M4 eastbound between J20 and J19
Carriageway
Dual Carriageway
Lane Usage
Cl3
Lane Number
3
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
1 lane restricted
Operational Lanes
3 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
{51A1E8DE-A380-4397-BA33-FAC51D97010E}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
498 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.521254 -2.523962
51.52086 -2.523641
51.520769 -2.523567
51.519471 -2.522529
51.519197 -2.522318
51.51776 -2.521213
51.517228 -2.520815

Segment 3

4 coordinate pairs
Description
M4 eastbound within J19
Carriageway
Dual Carriageway
Lane Usage
Cl3
Lane Number
3
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
1 lane restricted
Operational Lanes
3 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
{2DA6C824-2FEC-492C-94D1-2991AE668E78}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
259 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.512202 -2.517403
51.510731 -2.516435
51.510292 -2.516099
51.510068 -2.515909

Segment 4

5 coordinate pairs
Description
M4 eastbound between J20 and J19
Carriageway
Dual Carriageway
Lane Usage
Cl3
Lane Number
3
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
1 lane restricted
Operational Lanes
3 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
{4BCF2443-C5FD-4FF9-AA29-18986A140FEA}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
542 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.525558 -2.527632
51.523052 -2.525472
51.522132 -2.524679
51.521529 -2.524186
51.521254 -2.523962

Segment 5

4 coordinate pairs
Description
M4 eastbound between J19 and J18
Carriageway
Dual Carriageway
Lane Usage
Cl3
Lane Number
3
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
1 lane restricted
Operational Lanes
3 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
{193477EE-F920-4DA1-9FD6-013337672884}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
165 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.510068 -2.515909
51.509361 -2.515267
51.508797 -2.514698
51.508788 -2.514684

Segment 6

7 coordinate pairs
Description
M4 eastbound within J19
Carriageway
Dual Carriageway
Lane Usage
Cl3
Lane Number
3
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
1 lane restricted
Operational Lanes
3 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
{DE3F153B-AE64-49E0-BB4C-FE52319A0321}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
486 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.517228 -2.520815
51.515555 -2.519602
51.515269 -2.519413
51.515267 -2.519411
51.514272 -2.518762
51.513358 -2.518165
51.513206 -2.518062

Segment 7

9 coordinate pairs
Description
M4 eastbound between J19 and J18
Carriageway
Dual Carriageway
Lane Usage
Cl3
Lane Number
3
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
1 lane restricted
Operational Lanes
3 operational lanes
Direction On Section
East Bound
Direction Relative
Aligned
Height Grade
Start2 End2
Linear Element Road
M4
Linear Element Model
The Network Model
Linear Element Id
{C8C2B02F-1D98-4706-A542-202CE0EC054D}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
218 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.508788 -2.514684
51.508457 -2.514305
51.508269 -2.514058
51.508028 -2.513767
51.507858 -2.513549
51.507643 -2.513244
51.50742 -2.512896
51.507295 -2.512679
51.507285 -2.512661

Segment 8

2 coordinate pairs
Description
M4 eastbound within J19
Carriageway
Dual Carriageway
Lane Usage
Cl3
Lane Number
3
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
1 lane restricted
Operational Lanes
3 operational lanes
Direction On Section
East Bound
Direction Relative
Aligned
Height Grade
Start2 End2
Linear Element Road
M4
Linear Element Model
The Network Model
Linear Element Id
{93B3E094-7C2C-4794-8F7A-35DC21348483}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
120 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.513206 -2.518062
51.512202 -2.517403

Segment 9

7 coordinate pairs
Description
M4 eastbound between J19 and J18
Carriageway
Dual Carriageway
Lane Usage
Cl3
Lane Number
3
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
1 lane restricted
Operational Lanes
3 operational lanes
Direction On Section
East Bound
Direction Relative
Aligned
Height Grade
Start2 End2
Linear Element Road
M4
Linear Element Model
The Network Model
Linear Element Id
{69CD72CD-8EF0-4552-BE28-974A48E8FC63}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
161 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.507285 -2.512661
51.507036 -2.512215
51.506796 -2.511722
51.506742 -2.511609
51.506644 -2.511403
51.50644 -2.51094
51.506398 -2.51083
Geometry type
MultiLineString
Geometry points
52
First coordinate pair
-2.531555, 51.529702
Road section segments
1
Road section points
52
View geometry JSON 
{
    "type": "MultiLineString",
    "coordinates": [
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            [
                -2.531555,
                51.529702
            ],
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                -2.531162,
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            ],
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                -2.53066,
                51.528777
            ],
            [
                -2.530417,
                51.528527
            ],
            [
                -2.52871,
                51.526718
            ],
            [
                -2.527798,
                51.525734
            ],
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                -2.527632,
                51.525558
            ],
            [
                -2.523962,
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            ],
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                -2.523641,
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            ],
            [
                -2.523567,
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            ],
            [
                -2.522529,
                51.519471
            ],
            [
                -2.522318,
                51.519197
            ],
            [
                -2.521213,
                51.51776
            ],
            [
                -2.520815,
                51.517228
            ],
            [
                -2.517403,
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            ],
            [
                -2.516435,
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            ],
            [
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            ],
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            ],
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            ],
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            ],
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            ]
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}
View road section coordinates 
[
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            -2.531555,
            51.529702
        ],
        [
            -2.531162,
            51.529295
        ],
        [
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            51.528777
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        ],
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        ],
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        ],
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        ],
        [
            -2.517403,
            51.512202
        ],
        [
            -2.516435,
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        ],
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            51.510068
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        ],
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        ],
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        ],
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        ],
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        ],
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        ],
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        ],
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        ],
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        ],
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        ],
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            51.513206
        ],
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            -2.514684,
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        ],
        [
            -2.514305,
            51.508457
        ],
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            -2.514058,
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        ],
        [
            -2.513767,
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        ],
        [
            -2.513549,
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        ],
        [
            -2.513244,
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        ],
        [
            -2.512896,
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        ],
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            -2.512679,
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        ],
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            -2.512661,
            51.507285
        ],
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            -2.518062,
            51.513206
        ],
        [
            -2.517403,
            51.512202
        ],
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            -2.512661,
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        ],
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            -2.512215,
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        ],
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            -2.511722,
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        ],
        [
            -2.511609,
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        ],
        [
            -2.511403,
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        ],
        [
            -2.51094,
            51.50644
        ],
        [
            -2.51083,
            51.506398
        ]
    ]
]
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 7, 2026 9:19 AM
Record versioned
Mon, Sep 14, 2026 11:01 PM
Coordinate source
Geometry

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