M4 eastbound Jct 19 to Jct 18 lane closure 180/3-179/4

Planned

Start time: Tue, Aug 25, 2026 7:00 PM
Expected end: Wed, Aug 26, 2026 5:00 AM
Duration: 10 hours
Road: M4 – M4 Eastbound Between J19 And J18
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: Tue, Aug 11, 2026 1:48 PM
Last updated: Tue, Aug 25, 2026 7:42 AM
Cleared: Wed, Aug 26, 2026 5:00 AM

Latest update: M4 eastbound Jct 19 to Jct 18 lane closure 180/3-179/4

Coordinates: 51.505401, -2.497173
Latitude span: 51.504804 – 51.506354
Longitude span: -2.502880 – -2.490301
Bounding box centre: 51.505579, -2.496591
Location descriptions: M4 eastbound between J19 and J18

Feed validity status: Planned
Overall feed start: Tue, Aug 25, 2026 7:00 PM
Overall feed end: Wed, Aug 26, 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

10 coordinate pairs

Description: M4 eastbound between J19 and J18
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: {4FC55118-21B8-4C2A-8C78-DCFC2676C5E1}
Linear Element Type: B Carriageway
From Distance: 0 m
To Distance: 533 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.50524 -2.497772
51.505242 -2.497759
51.505422 -2.496635
51.505643 -2.49537
51.505947 -2.49363
51.506003 -2.493227
51.506077 -2.492695
51.506188 -2.491889
51.506263 -2.49127
51.506354 -2.490301

Segment 2

10 coordinate pairs

Description: M4 eastbound between J19 and J18
Carriageway: Dual Carriageway
Lanes Restricted: 2 lanes restricted
Operational Lanes: 2 operational lanes
Direction On Section: East Bound
Direction Relative: Aligned
Height Grade: Start2 End1
Linear Element Road: M4
Linear Element Model: The Network Model
Linear Element Id: {B2CC76F6-B619-49EF-BE0F-2FA6608BD373}
Linear Element Type: B Carriageway
From Distance: 581 m
To Distance: 940 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.504808 -2.50288
51.504804 -2.502435
51.504815 -2.501902
51.504827 -2.501326
51.504874 -2.500621
51.504894 -2.500361
51.505006 -2.499369
51.505126 -2.498462
51.505237 -2.497786
51.50524 -2.497772

Geometry type: MultiLineString
Geometry points: 20
First coordinate pair: -2.497772, 51.505240
Road section segments: 1
Road section points: 20

View geometry JSON

{
    "type": "MultiLineString",
    "coordinates": [
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            [
                -2.497772,
                51.50524
            ],
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                51.505242
            ],
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                -2.496635,
                51.505422
            ],
            [
                -2.49537,
                51.505643
            ],
            [
                -2.49363,
                51.505947
            ],
            [
                -2.493227,
                51.506003
            ],
            [
                -2.492695,
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            ],
            [
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            ],
            [
                -2.49127,
                51.506263
            ],
            [
                -2.490301,
                51.506354
            ],
            [
                -2.50288,
                51.504808
            ],
            [
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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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            ],
            [
                -2.497786,
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            ],
            [
                -2.497772,
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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