M4 westbound Jct 18 exit slip road carriageway closure

Cleared

Start time: Mon, Jun 15, 2026 8:00 PM
Expected end: Tue, Jun 16, 2026 5:00 AM
Duration: 15 minutes 2 seconds
Road: M4 – M4 J18 Westbound Exit
Category: Road Maintenance
Direction: Westbound
Carriageway: Dual Carriageway
Reason: Tree And Vegetation Cutting Work

Live incident

Active roadworks

Planned

Cleared

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First published: Thu, Jun 4, 2026 10:31 AM
Last updated: Mon, Jun 15, 2026 7:53 PM
Cleared: Mon, Jun 15, 2026 8:15 PM

Latest update: M4 westbound Jct 18 exit slip road carriageway closure

Coordinates: 51.501497, -2.343840
Latitude span: 51.501333 – 51.501790
Longitude span: -2.348981 – -2.337653
Bounding box centre: 51.501562, -2.343317
Location descriptions: M4 J18 westbound exit

M4 westbound between J17 and J18

Feed validity status: Planned
Overall feed start: Mon, Jun 15, 2026 8:00 PM
Overall feed end: Tue, Jun 16, 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

13 coordinate pairs

Description: M4 J18 westbound exit
Lanes Restricted: 3 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: {F15DFCD8-843C-462A-AC82-58EF60A9A1F2}
Linear Element Type: A Carriageway Exit Slip
From Distance: 0 m
To Distance: 634 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.501674 -2.339889
51.501638 -2.340105
51.501555 -2.340666
51.501499 -2.341329
51.501412 -2.343345
51.501392 -2.344324
51.50137 -2.34565
51.501365 -2.347148
51.501372 -2.347926
51.501388 -2.348488
51.501388 -2.348603
51.501369 -2.348877
51.501333 -2.348981

Segment 2

3 coordinate pairs

Description: M4 westbound between J17 and J18
Carriageway: Dual Carriageway
Lanes Restricted: 4 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: {9006057F-E3C4-467B-811F-1DA82422DA88}
Linear Element Type: A Carriageway
From Distance: 440 m
To Distance: 595 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.50179 -2.337653
51.501732 -2.338564
51.501674 -2.339889

Geometry type: MultiLineString
Geometry points: 16
First coordinate pair: -2.339889, 51.501674
Road section segments: 1
Road section points: 16

View geometry JSON

{
    "type": "MultiLineString",
    "coordinates": [
        [
            [
                -2.339889,
                51.501674
            ],
            [
                -2.340105,
                51.501638
            ],
            [
                -2.340666,
                51.501555
            ],
            [
                -2.341329,
                51.501499
            ],
            [
                -2.343345,
                51.501412
            ],
            [
                -2.344324,
                51.501392
            ],
            [
                -2.34565,
                51.50137
            ],
            [
                -2.347148,
                51.501365
            ],
            [
                -2.347926,
                51.501372
            ],
            [
                -2.348488,
                51.501388
            ],
            [
                -2.348603,
                51.501388
            ],
            [
                -2.348877,
                51.501369
            ],
            [
                -2.348981,
                51.501333
            ],
            [
                -2.337653,
                51.50179
            ],
            [
                -2.338564,
                51.501732
            ],
            [
                -2.339889,
                51.501674
            ]
        ]
    ]
}

View road section coordinates

Cause type: Road Maintenance
Detailed cause: Tree And Vegetation Cutting Work
Compliance: Mandatory
Probability: Probable
Validity status: Planned
Road management: Carriageway Closures