M4 eastbound lane 4 and lane 3 closure (50/6 to 49/5)

Planned

Start time: Thu, Aug 6, 2026 7:00 PM
Expected end: Fri, Aug 7, 2026 5:00 AM
Duration: 10 hours
Road: M4 – M4 Eastbound Between J10 And J8
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: Thu, May 21, 2026 12:24 PM
Last updated: Thu, Aug 6, 2026 3:55 AM
Cleared: Fri, Aug 7, 2026 5:00 AM

Latest update: M4 eastbound lane 4 and lane 3 closure (50/6 to 49/5)

Coordinates: 51.468473, -0.774140
Latitude span: 51.464838 – 51.472718
Longitude span: -0.779268 – -0.769359
Bounding box centre: 51.468778, -0.774314
Location descriptions: M4 eastbound between J10 and J8

Feed validity status: Planned
Overall feed start: Thu, Aug 6, 2026 7:00 PM
Overall feed end: Fri, Aug 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

9 coordinate pairs

Description: M4 eastbound between J10 and J8
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: {8A77EB64-65B7-4A7A-A2F4-C7C018BF5569}
Linear Element Type: B Carriageway
From Distance: 407 m
To Distance: 927 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.464838 -0.779268
51.464887 -0.779179
51.465741 -0.77777
51.4661 -0.777213
51.466401 -0.776765
51.467286 -0.775487
51.467584 -0.775047
51.468148 -0.774306
51.468254 -0.774168

Segment 2

8 coordinate pairs

Description: M4 eastbound between J10 and J8
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: {5439E6C3-3C4E-403D-AEF8-AD6595A4004E}
Linear Element Type: B Carriageway
From Distance: 0 m
To Distance: 467 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.469175 -0.772962
51.469201 -0.772955
51.469668 -0.772446
51.469794 -0.772301
51.470632 -0.771397
51.471435 -0.770581
51.471698 -0.770321
51.472718 -0.769359

Segment 3

2 coordinate pairs

Description: M4 eastbound between J10 and J8
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: {240CCA21-9FE4-4A51-8653-7311281C837D}
Linear Element Type: B Carriageway
From Distance: 0 m
To Distance: 132 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.468254 -0.774168
51.469175 -0.772962

Geometry type: MultiLineString
Geometry points: 19
First coordinate pair: -0.779268, 51.464838
Road section segments: 1
Road section points: 19

View geometry JSON

{
    "type": "MultiLineString",
    "coordinates": [
        [
            [
                -0.779268,
                51.464838
            ],
            [
                -0.779179,
                51.464887
            ],
            [
                -0.77777,
                51.465741
            ],
            [
                -0.777213,
                51.4661
            ],
            [
                -0.776765,
                51.466401
            ],
            [
                -0.775487,
                51.467286
            ],
            [
                -0.775047,
                51.467584
            ],
            [
                -0.774306,
                51.468148
            ],
            [
                -0.774168,
                51.468254
            ],
            [
                -0.772962,
                51.469175
            ],
            [
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                51.469201
            ],
            [
                -0.772446,
                51.469668
            ],
            [
                -0.772301,
                51.469794
            ],
            [
                -0.771397,
                51.470632
            ],
            [
                -0.770581,
                51.471435
            ],
            [
                -0.770321,
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            ],
            [
                -0.769359,
                51.472718
            ],
            [
                -0.774168,
                51.468254
            ],
            [
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            ]
        ]
    ]
}

View road section coordinates

Cause type: Road Maintenance
Detailed cause: Maintenance Work
Compliance: Mandatory
Probability: Probable
Validity status: Planned
Road management: Other