M4 westbound Jct 17 to Jct 18 hard shoulder closure

Planned

Start time: Tue, Nov 3, 2026 7:00 AM
Expected end: Tue, Nov 3, 2026 5:00 PM
Duration: 10 hours
Road: M4 – M4 Westbound Between J17 And J18
Category: Road Maintenance
Direction: Westbound
Carriageway: Dual Carriageway
Reason: Maintenance Work

Live incident

Active roadworks

Planned

Cleared

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First published: Thu, Oct 22, 2026 1:10 PM
Last updated: Tue, Nov 3, 2026 1:59 AM
Cleared: Tue, Nov 3, 2026 5:00 PM

Latest update: M4 westbound Jct 17 to Jct 18 hard shoulder closure

Coordinates: 51.509999, -2.191712
Latitude span: 51.509557 – 51.510646
Longitude span: -2.204438 – -2.178396
Bounding box centre: 51.510102, -2.191417
Location descriptions: M4 westbound between J17 and J18

Feed validity status: Planned
Overall feed start: Tue, Nov 3, 2026 7:00 AM
Overall feed end: Tue, Nov 3, 2026 5:00 PM
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

12 coordinate pairs

Description: M4 westbound between J17 and J18
Carriageway: Dual Carriageway
Lane Usage: Lh
Lane Number: 0
Lane Status: Closed
Lane Direction: Aligned
Lanes Restricted: 0 lanes restricted
Operational Lanes: 4 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: {5E677BE6-C3DA-426F-B6E2-7FBF6A82F687}
Linear Element Type: A Carriageway
From Distance: 0 m
To Distance: 1,406 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.50959 -2.180416
51.509607 -2.181503
51.509674 -2.184774
51.509777 -2.187858
51.509793 -2.188708
51.509801 -2.189314
51.509819 -2.189717
51.509934 -2.192311
51.509984 -2.193436
51.510114 -2.195914
51.510219 -2.198062
51.510385 -2.200632

Segment 2

3 coordinate pairs

Description: M4 westbound between J17 and J18
Carriageway: Dual Carriageway
Lane Usage: Lh
Lane Number: 0
Lane Status: Closed
Lane Direction: Aligned
Lanes Restricted: 0 lanes restricted
Operational Lanes: 4 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: {FF0BE202-9B6F-48E1-BFA6-FBD3A347D592}
Linear Element Type: A Carriageway
From Distance: 719 m
To Distance: 860 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.509557 -2.178396
51.509565 -2.17986
51.50959 -2.180416

Segment 3

5 coordinate pairs

Description: M4 westbound between J17 and J18
Carriageway: Dual Carriageway
Lane Usage: Lh
Lane Number: 0
Lane Status: Closed
Lane Direction: Aligned
Lanes Restricted: 0 lanes restricted
Operational Lanes: 4 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: {0B558FFF-6208-4319-A11F-246957891B0C}
Linear Element Type: A Carriageway
From Distance: 0 m
To Distance: 265 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.510385 -2.200632
51.510402 -2.200973
51.510552 -2.203121
51.510595 -2.203755
51.510646 -2.204438

Geometry type: MultiLineString
Geometry points: 20
First coordinate pair: -2.180416, 51.509590
Road section segments: 1
Road section points: 20

View geometry JSON

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    "type": "MultiLineString",
    "coordinates": [
        [
            [
                -2.180416,
                51.50959
            ],
            [
                -2.181503,
                51.509607
            ],
            [
                -2.184774,
                51.509674
            ],
            [
                -2.187858,
                51.509777
            ],
            [
                -2.188708,
                51.509793
            ],
            [
                -2.189314,
                51.509801
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            [
                -2.189717,
                51.509819
            ],
            [
                -2.192311,
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            ],
            [
                -2.193436,
                51.509984
            ],
            [
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                51.510114
            ],
            [
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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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            ],
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            ],
            [
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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