M4 eastbound Jct 18 between exit and entry slip road carriageway closure

Cleared

Start time: Thu, Oct 15, 2026 6:48 PM
Expected end: Fri, Oct 16, 2026 5:00 AM
Duration: 3 hours 7 minutes 1 second
Road: M4 – M4 Eastbound Between J18 And J17
Category: Road Maintenance
Direction: Eastbound
Carriageway: Dual Carriageway
Reason: Roadworks

Live incident

Active roadworks

Planned

Cleared

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First published: Thu, Oct 15, 2026 6:48 PM
Last updated: Thu, Oct 15, 2026 9:25 PM
Cleared: Thu, Oct 15, 2026 9:55 PM

Latest update: M4 eastbound Jct 18 between exit and entry slip road carriageway closure

Coordinates: 51.501526, -2.352692
Latitude span: 51.499987 – 51.502078
Longitude span: -2.366824 – -2.335976
Bounding box centre: 51.501033, -2.351400
Location descriptions: M4 eastbound between J18 and J17

M4 eastbound within J18

M4 eastbound between J19 and J18

Feed validity status: Active
Overall feed start: Thu, Oct 15, 2026 6:48 PM
Overall feed end: Fri, Oct 16, 2026 5:00 AM
Feed window length: 10 hours 12 minutes
Probability code (raw): certain
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

6 coordinate pairs

Description: M4 eastbound between J18 and J17
Carriageway: Dual Carriageway
Lanes Restricted: 4 lanes restricted
Operational Lanes: 0 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: {3076E318-401F-4607-BE8A-ECC40910170E}
Linear Element Type: B Carriageway
From Distance: 0 m
To Distance: 299 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.501862 -2.34028
51.501862 -2.340251
51.501911 -2.338897
51.50194 -2.338033
51.502016 -2.336737
51.502078 -2.335976

Segment 2

5 coordinate pairs

Description: M4 eastbound within J18
Carriageway: Dual Carriageway
Lanes Restricted: 4 lanes restricted
Operational Lanes: 0 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: {F4DDBB46-70A5-4A49-9879-86CF9E3E0228}
Linear Element Type: B Carriageway
From Distance: 0 m
To Distance: 125 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.501999 -2.350667
51.501998 -2.350478
51.501994 -2.350265
51.501965 -2.348996
51.501959 -2.348864

Segment 3

7 coordinate pairs

Description: M4 eastbound within J18
Carriageway: Dual Carriageway
Lanes Restricted: 4 lanes restricted
Operational Lanes: 0 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: {32FADBBC-F816-49E8-B496-866F25C3CB2F}
Linear Element Type: B Carriageway
From Distance: 0 m
To Distance: 596 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.501959 -2.348864
51.501887 -2.347152
51.501837 -2.345711
51.501791 -2.343132
51.501812 -2.341835
51.501805 -2.341388
51.501862 -2.34028

Segment 4

11 coordinate pairs

Description: M4 eastbound between J19 and J18
Carriageway: Dual Carriageway
Lanes Restricted: 4 lanes restricted
Operational Lanes: 0 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: {AE403C52-5D62-47F7-9FDF-592C93083448}
Linear Element Type: B Carriageway
From Distance: 4,473 m
To Distance: 4,868 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.499987 -2.366824
51.500221 -2.365668
51.500367 -2.364947
51.500422 -2.364645
51.500495 -2.364372
51.500622 -2.363768
51.500896 -2.36256
51.500987 -2.362143
51.501005 -2.362044
51.501097 -2.361553
51.501124 -2.361438

Segment 5

13 coordinate pairs

Description: M4 eastbound within J18
Carriageway: Dual Carriageway
Lanes Restricted: 4 lanes restricted
Operational Lanes: 0 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: {9E391445-CF68-43AC-BC41-5E75DA82EEA8}
Linear Element Type: B Carriageway
From Distance: 0 m
To Distance: 756 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.501124 -2.361438
51.501335 -2.360042
51.501367 -2.359813
51.501529 -2.358588
51.501593 -2.357984
51.501732 -2.356717
51.501797 -2.355983
51.501901 -2.354514
51.501968 -2.353088
51.501978 -2.352786
51.501988 -2.352498
51.502001 -2.351172
51.501999 -2.350667

Geometry type: MultiLineString
Geometry points: 42
First coordinate pair: -2.340280, 51.501862
Road section segments: 1
Road section points: 42

View geometry JSON

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            ],
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            ]
        ]
    ]
}

View road section coordinates

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