M4 westbound Jct 8/9 entry slip road closure

Cleared

Start time: Fri, Jul 31, 2026 8:00 PM
Expected end: Sat, Aug 1, 2026 5:00 AM
Duration: 2 seconds
Road: M4 – M4 J8 Westbound Access
Category: Road Maintenance
Direction: Westbound
Reason: Repair Work

Live incident

Active roadworks

Planned

Cleared

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First published: Wed, Jul 22, 2026 7:41 AM
Last updated: Fri, Jul 31, 2026 7:20 PM
Cleared: Fri, Jul 31, 2026 8:00 PM

Latest update: M4 westbound Jct 8/9 entry slip road closure

Coordinates: 51.497134, -0.729219
Latitude span: 51.495416 – 51.498335
Longitude span: -0.733683 – -0.724618
Bounding box centre: 51.496876, -0.729151
Location descriptions: M4 J8 westbound access

Feed validity status: Planned
Overall feed start: Fri, Jul 31, 2026 8:00 PM
Overall feed end: Sat, Aug 1, 2026 5:00 AM
Feed window length: 9 hours
Probability code (raw): probable
Compliance option (raw): mandatory
Source identification (raw): roadworks

Management type value: carriagewayClosures (Carriageway Closures)
Contra-flow flag (raw): false
Width restriction flag (raw): false
Height restriction flag (raw): false
Weight restriction flag (raw): false

Segment 1

15 coordinate pairs

Description: M4 J8 westbound access
Lanes Restricted: 1 lane restricted
Operational Lanes: 0 operational lanes
Direction On Section: West Bound
Direction Relative: Aligned
Height Grade: Start1 End1
Linear Element Road: M4
Linear Element Model: The Network Model
Linear Element Id: {9F95CBFF-70F7-F1DC-B67D-4DFA5DB5A39A}
Linear Element Type: A Carriageway Entry Slip
From Distance: 0 m
To Distance: 513 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.497894 -0.727491
51.497752 -0.72795
51.497424 -0.729013
51.497203 -0.72965
51.49702 -0.730152
51.496829 -0.730634
51.496628 -0.731108
51.496427 -0.731583
51.49624 -0.731982
51.495968 -0.73251
51.495732 -0.732972
51.495627 -0.73316
51.495523 -0.733348
51.495433 -0.733526
51.495416 -0.733683

Segment 2

10 coordinate pairs

Description: M4 J8 westbound access
Lanes Restricted: 2 lanes restricted
Operational Lanes: 0 operational lanes
Direction On Section: West Bound
Direction Relative: Aligned
Height Grade: Start1 End1
Linear Element Road: M4
Linear Element Model: The Network Model
Linear Element Id: {38B48D13-DB59-B684-442D-5F9EB2A03172}
Linear Element Type: A Carriageway Entry Slip
From Distance: 6 m
To Distance: 214 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.498241 -0.724618
51.498303 -0.724918
51.498324 -0.72506
51.498335 -0.725261
51.498305 -0.72546
51.498002 -0.727059
51.497972 -0.72718
51.497943 -0.727291
51.497917 -0.727386
51.497894 -0.727491

Geometry type: MultiLineString
Geometry points: 25
First coordinate pair: -0.727491, 51.497894
Road section segments: 1
Road section points: 25

View geometry JSON

{
    "type": "MultiLineString",
    "coordinates": [
        [
            [
                -0.727491,
                51.497894
            ],
            [
                -0.72795,
                51.497752
            ],
            [
                -0.729013,
                51.497424
            ],
            [
                -0.72965,
                51.497203
            ],
            [
                -0.730152,
                51.49702
            ],
            [
                -0.730634,
                51.496829
            ],
            [
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                51.496628
            ],
            [
                -0.731583,
                51.496427
            ],
            [
                -0.731982,
                51.49624
            ],
            [
                -0.73251,
                51.495968
            ],
            [
                -0.732972,
                51.495732
            ],
            [
                -0.73316,
                51.495627
            ],
            [
                -0.733348,
                51.495523
            ],
            [
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                51.495433
            ],
            [
                -0.733683,
                51.495416
            ],
            [
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                51.498241
            ],
            [
                -0.724918,
                51.498303
            ],
            [
                -0.72506,
                51.498324
            ],
            [
                -0.725261,
                51.498335
            ],
            [
                -0.72546,
                51.498305
            ],
            [
                -0.727059,
                51.498002
            ],
            [
                -0.72718,
                51.497972
            ],
            [
                -0.727291,
                51.497943
            ],
            [
                -0.727386,
                51.497917
            ],
            [
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            ]
        ]
    ]
}

View road section coordinates

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