M4 eastbound Jct 20 to Jct 19 lane closure 183/6-182/7

Cleared

Start time: Mon, Sep 28, 2026 7:11 PM
Expected end: Tue, Sep 29, 2026 5:00 AM
Duration: 4 hours 49 minutes 2 seconds
Road: M4 – M4 Eastbound Between J20 And J19
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: Mon, Sep 28, 2026 9:15 PM
Last updated: Mon, Sep 28, 2026 11:47 PM
Cleared: Tue, Sep 29, 2026 12:00 AM

Latest update: M4 eastbound Jct 20 to Jct 19 lane closure 183/6-182/7

Coordinates: 51.523741, -2.526101
Latitude span: 51.520956 – 51.527403
Longitude span: -2.529357 – -2.523719
Bounding box centre: 51.524180, -2.526538
Location descriptions: M4 eastbound between J20 and J19

Feed validity status: Active
Overall feed start: Mon, Sep 28, 2026 7:11 PM
Overall feed end: Tue, Sep 29, 2026 5:00 AM
Feed window length: 9 hours 49 minutes
Probability code (raw): certain
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

5 coordinate pairs

Description: M4 eastbound between J20 and J19
Carriageway: Dual Carriageway
Lanes Restricted: 2 lanes restricted
Operational Lanes: 2 operational lanes
Direction On Section: East Bound
Direction Relative: Aligned
Height Grade: Start1 End2
Linear Element Road: M4
Linear Element Model: The Network Model
Linear Element Id: {4BCF2443-C5FD-4FF9-AA29-18986A140FEA}
Linear Element Type: B Carriageway
From Distance: 0 m
To Distance: 542 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.525558 -2.527632
51.523052 -2.525472
51.522132 -2.524679
51.521529 -2.524186
51.521254 -2.523962

Segment 2

4 coordinate pairs

Description: M4 eastbound between J20 and J19
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: {85AC09F6-96DE-494F-B2A9-C8AA2E3DFACC}
Linear Element Type: B Carriageway
From Distance: 2,106 m
To Distance: 2,343 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.527403 -2.529357
51.526718 -2.52871
51.525734 -2.527798
51.525558 -2.527632

Segment 3

2 coordinate pairs

Description: M4 eastbound between J20 and J19
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: {51A1E8DE-A380-4397-BA33-FAC51D97010E}
Linear Element Type: B Carriageway
From Distance: 0 m
To Distance: 37 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.521254 -2.523962
51.520956 -2.523719

Geometry type: MultiLineString
Geometry points: 11
First coordinate pair: -2.527632, 51.525558
Road section segments: 1
Road section points: 11

View geometry JSON

{
    "type": "MultiLineString",
    "coordinates": [
        [
            [
                -2.527632,
                51.525558
            ],
            [
                -2.525472,
                51.523052
            ],
            [
                -2.524679,
                51.522132
            ],
            [
                -2.524186,
                51.521529
            ],
            [
                -2.523962,
                51.521254
            ],
            [
                -2.529357,
                51.527403
            ],
            [
                -2.52871,
                51.526718
            ],
            [
                -2.527798,
                51.525734
            ],
            [
                -2.527632,
                51.525558
            ],
            [
                -2.523962,
                51.521254
            ],
            [
                -2.523719,
                51.520956
            ]
        ]
    ]
}

View road section coordinates

Cause type: Road Maintenance
Detailed cause: Roadworks
Compliance: Mandatory
Probability: Certain
Validity status: Active
Road management: Other