Crash View

M4 Eastbound Jct 5 to Jct 4B Lane 1 closure

Planned

M4 Eastbound Jct 5 to Jct 4B Lane 1 closure

Start time
Thu, Aug 13, 2026 9:00 PM
Expected end
Fri, Aug 14, 2026 4:30 AM
Duration
7 hours 30 minutes
Road
M4 – M4 Eastbound Between J5 And J4B
Category
Road Maintenance
Direction
Eastbound
Carriageway
Dual Carriageway
Lanes affected
1 of 2 lanes affected, 1 of 3 lanes affected, 1 of 4 lanes affected
Reason
Roadworks
Live incident
Active roadworks
Planned
Cleared
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First published
Wed, Aug 12, 2026 8:50 PM
Last updated
Thu, Aug 13, 2026 3:03 AM
Cleared
Fri, Aug 14, 2026 4:30 AM
  • Latest update: M4 Eastbound Jct 5 to Jct 4B Lane 1 closure
Coordinates
51.493651, -0.516079
Latitude span
51.493119 – 51.494829
Longitude span
-0.532990 – -0.499266
Bounding box centre
51.493974, -0.516128
Location descriptions
  • M4 eastbound between J5 and J4B
  • M4 eastbound within J4B
Feed validity status
Planned
Overall feed start
Thu, Aug 13, 2026 9:00 PM
Overall feed end
Fri, Aug 14, 2026 4:30 AM
Feed window length
7 hours 30 minutes
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

3 coordinate pairs
Description
M4 eastbound between J5 and J4B
Carriageway
Dual Carriageway
Lanes Restricted
1 lane 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
{2D7FBEAA-7E69-47DC-8335-F678E9006D5D}
Linear Element Type
B Carriageway
From Distance
20 m
To Distance
37 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.493196 -0.53299
51.493198 -0.532962
51.493212 -0.532747

Segment 2

2 coordinate pairs
Description
M4 eastbound within J4B
Carriageway
Dual Carriageway
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
{1E8346D9-F0A3-4B38-AB37-2A66464831C2}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
79 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.494215 -0.505777
51.494353 -0.504652

Segment 3

30 coordinate pairs
Description
M4 eastbound between J5 and J4B
Carriageway
Dual Carriageway
Lanes Restricted
1 lane restricted
Operational Lanes
4 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
{E240EF51-44E3-47A6-AAA7-217FB89D1F13}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
1,870 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.493212 -0.532747
51.493249 -0.532127
51.493264 -0.531853
51.493277 -0.531492
51.493297 -0.530915
51.493315 -0.530194
51.493328 -0.529476
51.493336 -0.529027
51.493332 -0.527947
51.493309 -0.526881
51.493293 -0.526277
51.493276 -0.524923
51.493173 -0.520389
51.493122 -0.517726
51.49312 -0.516717
51.493119 -0.51604
51.49312 -0.515421
51.493171 -0.514123
51.493174 -0.514036
51.493233 -0.513026
51.493328 -0.511957
51.493343 -0.511783
51.493456 -0.510757
51.493557 -0.510037
51.493572 -0.509932
51.493679 -0.509208
51.493713 -0.509008
51.493972 -0.507441
51.494091 -0.506602
51.494178 -0.505994

Segment 4

2 coordinate pairs
Description
M4 eastbound between J5 and J4B
Carriageway
Dual Carriageway
Lanes Restricted
1 lane restricted
Operational Lanes
4 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
{8266070A-9116-4A3E-B544-1AAE10E774C0}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
15 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.494178 -0.505994
51.494215 -0.505777

Segment 5

7 coordinate pairs
Description
M4 eastbound within J4B
Carriageway
Dual Carriageway
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
{1E8346D9-F0A3-4B38-AB37-2A66464831C2}
Linear Element Type
B Carriageway
From Distance
80 m
To Distance
457 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.494355 -0.504638
51.494535 -0.503162
51.494538 -0.503137
51.494646 -0.50201
51.494739 -0.500825
51.494821 -0.499465
51.494829 -0.499266
Geometry type
MultiLineString
Geometry points
44
First coordinate pair
-0.532990, 51.493196
Road section segments
1
Road section points
44
View geometry JSON 
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            ],
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                -0.505777,
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            ],
            [
                -0.504652,
                51.494353
            ],
            [
                -0.532747,
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            ],
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            ],
            [
                -0.526277,
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            ],
            [
                -0.524923,
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            [
                -0.520389,
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                -0.517726,
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            ],
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                -0.516717,
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                -0.51604,
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                -0.515421,
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            ],
            [
                -0.509932,
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            ],
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            ],
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            ],
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            ],
            [
                -0.499465,
                51.494821
            ],
            [
                -0.499266,
                51.494829
            ]
        ]
    ]
}
View road section coordinates 
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            -0.53299,
            51.493196
        ],
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            -0.532962,
            51.493198
        ],
        [
            -0.532747,
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        ],
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        ],
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        ],
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            -0.529027,
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        ],
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            -0.527947,
            51.493332
        ],
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            -0.526881,
            51.493309
        ],
        [
            -0.526277,
            51.493293
        ],
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            -0.524923,
            51.493276
        ],
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            -0.520389,
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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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        ],
        [
            -0.499465,
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        ],
        [
            -0.499266,
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        ]
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]
Cause type
Road Maintenance
Detailed cause
Roadworks
Compliance
Mandatory
Probability
Probable
Validity status
Planned
Road management
Other
Feed provider
National Highways
Data source
Roadworks
Feed version
2
Record created
Wed, Aug 12, 2026 8:50 PM
Record versioned
Thu, Aug 13, 2026 3:03 AM
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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