M4 eastbound Jct 5 entry slip road lane closures

Planned

Start time: Mon, Aug 10, 2026 7:00 PM
Expected end: Tue, Aug 11, 2026 5:00 AM
Duration: 10 hours
Road: M4 – M4 J5 Eastbound Access
Category: Road Maintenance
Direction: Eastbound
Carriageway: Dual Carriageway
Lanes affected: Lane 1 closed, 1 of 2 lanes affected
Reason: Roadworks

Live incident

Active roadworks

Planned

Cleared

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First published: Tue, Aug 4, 2026 9:32 AM
Last updated: Mon, Aug 10, 2026 12:11 AM
Cleared: Tue, Aug 11, 2026 5:00 AM

Latest update: M4 eastbound Jct 5 entry slip road lane closures

Coordinates: 51.492913, -0.536783
Latitude span: 51.492385 – 51.493210
Longitude span: -0.542003 – -0.533237
Bounding box centre: 51.492798, -0.537620
Location descriptions: M4 J5 eastbound access

M4 eastbound between J5 and J4B

Feed validity status: Planned
Overall feed start: Mon, Aug 10, 2026 7:00 PM
Overall feed end: Tue, Aug 11, 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

16 coordinate pairs

Description: M4 J5 eastbound access
Lane Usage: Cl1
Lane Number: 1
Lane Status: Closed
Lane Direction: Aligned
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: {00D2BB02-5F43-4EB3-9D03-C3E7144BB4AC}
Linear Element Type: B Carriageway Entry Slip
From Distance: 15 m
To Distance: 629 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.492385 -0.542003
51.492433 -0.541704
51.492491 -0.541241
51.492499 -0.541169
51.492644 -0.539868
51.49271 -0.539347
51.492733 -0.539044
51.492928 -0.537395
51.493032 -0.536355
51.493066 -0.535735
51.493072 -0.535659
51.493106 -0.535179
51.493148 -0.534454
51.49321 -0.533415
51.493176 -0.53328
51.493176 -0.533279

Segment 2

3 coordinate pairs

Description: M4 eastbound between J5 and J4B
Carriageway: Dual Carriageway
Lane Usage: Cl1
Lane Number: 1
Lane Status: Closed
Lane Direction: Aligned
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: 0 m
To Distance: 2 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.493176 -0.533279
51.493179 -0.53324
51.493179 -0.533237

Geometry type: MultiLineString
Geometry points: 19
First coordinate pair: -0.542003, 51.492385
Road section segments: 1
Road section points: 19

View geometry JSON

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    "type": "MultiLineString",
    "coordinates": [
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            ],
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                51.492491
            ],
            [
                -0.541169,
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            ],
            [
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            ],
            [
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            ],
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            [
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            ],
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            [
                -0.53324,
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        ]
    ]
}

View road section coordinates

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