Crash View

M4 eastbound lanes 1 and 2 closed

Planned

M4 eastbound lanes 1 and 2 closed

Start time
Mon, Aug 17, 2026 7:00 PM
Expected end
Tue, Aug 18, 2026 5:00 AM
Duration
10 hours
Road
M4 – M4 Eastbound Between J19 And J18
Category
Construction Work
Direction
Eastbound
Carriageway
Dual Carriageway
Lanes affected
2 of 2 lanes affected
Reason
Construction Work
Live incident
Active roadworks
Planned
Cleared
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First published
Tue, Aug 11, 2026 2:18 PM
Last updated
Mon, Aug 17, 2026 7:26 AM
Cleared
Tue, Aug 18, 2026 5:00 AM
  • Latest update: M4 eastbound lanes 1 and 2 closed
Coordinates
51.507011, -2.503799
Latitude span
51.504804 – 51.513755
Longitude span
-2.518424 – -2.481815
Bounding box centre
51.509280, -2.500120
Location descriptions
  • M4 eastbound between J19 and J18
  • M4 eastbound within J19
Feed validity status
Planned
Overall feed start
Mon, Aug 17, 2026 7:00 PM
Overall feed end
Tue, Aug 18, 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

4 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
{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 2

4 coordinate pairs
Description
M4 eastbound within J19
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
{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 3

9 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 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 4

3 coordinate pairs
Description
M4 eastbound within J19
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
{DE3F153B-AE64-49E0-BB4C-FE52319A0321}
Linear Element Type
B Carriageway
From Distance
420 m
To Distance
486 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.513755 -2.518424
51.513358 -2.518165
51.513206 -2.518062

Segment 5

10 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
{4FC55118-21B8-4C2A-8C78-DCFC2676C5E1}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
549 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.50524 -2.497772
51.505242 -2.497759
51.505422 -2.496635
51.505643 -2.49537
51.505947 -2.49363
51.506003 -2.493227
51.506077 -2.492695
51.506188 -2.491889
51.506263 -2.49127
51.506376 -2.490076

Segment 6

24 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
{B2CC76F6-B619-49EF-BE0F-2FA6608BD373}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
940 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.506368 -2.510752
51.506164 -2.510245
51.50603 -2.509884
51.505871 -2.509449
51.505746 -2.509059
51.505622 -2.50864
51.505454 -2.508062
51.505321 -2.507513
51.505242 -2.507123
51.505172 -2.506747
51.505015 -2.505665
51.504834 -2.503776
51.504826 -2.503617
51.504817 -2.503458
51.50481 -2.503084
51.504804 -2.502435
51.504815 -2.501902
51.504827 -2.501326
51.504874 -2.500621
51.504894 -2.500361
51.505006 -2.499369
51.505126 -2.498462
51.505237 -2.497786
51.50524 -2.497772

Segment 7

13 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
{C3679DF2-03F3-4CA4-BB4D-FDC094D96E6A}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
575 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.506376 -2.490076
51.506394 -2.489932
51.506452 -2.489111
51.50649 -2.488621
51.506509 -2.487959
51.506521 -2.487527
51.506542 -2.48672
51.506538 -2.485668
51.506523 -2.484861
51.506482 -2.483881
51.50644 -2.483247
51.506363 -2.482237
51.506322 -2.481815

Segment 8

2 coordinate pairs
Description
M4 eastbound within J19
Carriageway
Dual Carriageway
Lanes Restricted
2 lanes restricted
Operational Lanes
2 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
Lanes Restricted
2 lanes restricted
Operational Lanes
2 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
167 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
51.506368 -2.510752
Geometry type
MultiLineString
Geometry points
76
First coordinate pair
-2.515909, 51.510068
Road section segments
1
Road section points
76
View geometry JSON 
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            ],
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}
View road section coordinates 
[
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        [
            -2.515909,
            51.510068
        ],
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            -2.515267,
            51.509361
        ],
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]
Cause type
Construction Work
Detailed cause
Construction Work
Compliance
Mandatory
Probability
Probable
Validity status
Planned
Road management
Other
Feed provider
National Highways
Data source
Roadworks
Feed version
1
Record created
Tue, Aug 11, 2026 2:18 PM
Record versioned
Mon, Aug 17, 2026 7:26 AM
Coordinate source
Geometry

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