M4 Eastbound Jct 4 to Jct 3 lane 2,3 closure

Planned

Start time: Thu, Aug 6, 2026 9:00 PM
Expected end: Fri, Aug 7, 2026 4:30 AM
Duration: 7 hours 30 minutes
Road: M4 – M4 Eastbound Between J4 And J3
Category: Road Maintenance
Direction: Eastbound
Carriageway: Dual Carriageway
Lanes affected: 2 of 2 lanes affected
Reason: Roadworks

Live incident

Active roadworks

Planned

Cleared

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First published: Thu, Aug 6, 2026 2:37 AM
Last updated: Thu, Aug 6, 2026 3:55 AM
Cleared: Fri, Aug 7, 2026 4:30 AM

Latest update: M4 Eastbound Jct 4 to Jct 3 lane 2,3 closure

Coordinates: 51.493795, -0.429996
Latitude span: 51.493002 – 51.494309
Longitude span: -0.436854 – -0.418714
Bounding box centre: 51.493656, -0.427784
Location descriptions: M4 eastbound between J4 and J3

Feed validity status: Planned
Overall feed start: Thu, Aug 6, 2026 9:00 PM
Overall feed end: Fri, Aug 7, 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

8 coordinate pairs

Description: M4 eastbound between J4 and J3
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: {033C1081-1437-46E3-AA87-D2149446F0ED}
Linear Element Type: B Carriageway
From Distance: 622 m
To Distance: 1,196 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.494309 -0.436854
51.494224 -0.43588
51.494184 -0.43542
51.494116 -0.434573
51.494065 -0.433941
51.493942 -0.432144
51.493876 -0.431268
51.493688 -0.428652

Segment 2

4 coordinate pairs

Description: M4 eastbound between J4 and J3
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: {E54946B4-B306-4292-9E00-7F994BD0C490}
Linear Element Type: B Carriageway
From Distance: 0 m
To Distance: 694 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.493688 -0.428652
51.493366 -0.424082
51.493074 -0.419771
51.493002 -0.418714

Geometry type: MultiLineString
Geometry points: 12
First coordinate pair: -0.436854, 51.494309
Road section segments: 1
Road section points: 12

View geometry JSON

{
    "type": "MultiLineString",
    "coordinates": [
        [
            [
                -0.436854,
                51.494309
            ],
            [
                -0.43588,
                51.494224
            ],
            [
                -0.43542,
                51.494184
            ],
            [
                -0.434573,
                51.494116
            ],
            [
                -0.433941,
                51.494065
            ],
            [
                -0.432144,
                51.493942
            ],
            [
                -0.431268,
                51.493876
            ],
            [
                -0.428652,
                51.493688
            ],
            [
                -0.428652,
                51.493688
            ],
            [
                -0.424082,
                51.493366
            ],
            [
                -0.419771,
                51.493074
            ],
            [
                -0.418714,
                51.493002
            ]
        ]
    ]
}

View road section coordinates

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