M4 Eastbound Jct 4B exit slip road closure

Planned

Start time: Mon, Sep 22, 2025 9:00 PM
Expected end: Tue, Sep 23, 2025 4:30 AM
Duration: 7 hours 30 minutes
Road: M4 – M4 Eastbound Between J5 And J4B
Category: Road Maintenance
Direction: Eastbound
Carriageway: Dual Carriageway
Reason: Other

Active

Planned

Cleared

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First published: Fri, Sep 19, 2025 9:49 AM
Last updated: Mon, Sep 22, 2025 6:53 PM
Cleared: Tue, Sep 23, 2025 4:30 AM

Latest update: M4 Eastbound Jct 4B exit slip road closure

Coordinates: 51.494234, -0.506306
Latitude span: 51.493133 – 51.495699
Longitude span: -0.515085 – -0.499517
Bounding box centre: 51.494416, -0.507301
Location descriptions: M4 eastbound between J5 and J4B

link road from M4 J4B eastbound to M25 J15

Feed validity status: Planned
Overall feed start: Mon, Sep 22, 2025 9:00 PM
Overall feed end: Tue, Sep 23, 2025 4:30 AM
Feed window length: 7 hours 30 minutes
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

14 coordinate pairs

Description: M4 eastbound between J5 and J4B
Carriageway: Dual Carriageway
Lanes Restricted: 5 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: {E240EF51-44E3-47A6-AAA7-217FB89D1F13}
Linear Element Type: B Carriageway
From Distance: 1,227 m
To Distance: 1,870 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.493133 -0.515085
51.493171 -0.514123
51.493174 -0.514036
51.493233 -0.513026
51.493328 -0.511957
51.493343 -0.511783
51.493456 -0.510757
51.493557 -0.510037
51.493572 -0.509932
51.493679 -0.509208
51.493713 -0.509008
51.493972 -0.507441
51.494091 -0.506602
51.494178 -0.505994

Segment 2

10 coordinate pairs

Description: link road from M4 J4B eastbound to M25 J15
Lanes Restricted: 3 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: {F8ED4782-79F0-478D-801B-C850EBB05D33}
Linear Element Type: A Carriageway Entry Slip
From Distance: 0 m
To Distance: 373 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.494215 -0.505777
51.494656 -0.50327
51.494672 -0.503173
51.494787 -0.502477
51.494917 -0.501713
51.49494 -0.50159
51.494993 -0.50131
51.495054 -0.501031
51.495164 -0.500675
51.49518 -0.500639

Segment 3

3 coordinate pairs

Description: link road from M4 J4B eastbound to M25 J15
Lanes Restricted: 3 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: {21298787-4F37-429A-9C6E-F407918FDCAF}
Linear Element Type: A Carriageway Entry Slip
From Distance: 0 m
To Distance: 96 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.49518 -0.500639
51.495322 -0.500313
51.495699 -0.499517

Segment 4

2 coordinate pairs

Description: M4 eastbound between J5 and J4B
Carriageway: Dual Carriageway
Lanes Restricted: 5 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: {8266070A-9116-4A3E-B544-1AAE10E774C0}
Linear Element Type: B Carriageway
From Distance: 0 m
To Distance: 15 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.494178 -0.505994
51.494215 -0.505777

Geometry type: MultiLineString
Geometry points: 29
First coordinate pair: -0.515085, 51.493133
Road section segments: 1
Road section points: 29

View geometry JSON

{
    "type": "MultiLineString",
    "coordinates": [
        [
            [
                -0.515085,
                51.493133
            ],
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                -0.514123,
                51.493171
            ],
            [
                -0.514036,
                51.493174
            ],
            [
                -0.513026,
                51.493233
            ],
            [
                -0.511957,
                51.493328
            ],
            [
                -0.511783,
                51.493343
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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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            ],
            [
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            ],
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            ],
            [
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            ]
        ]
    ]
}

View road section coordinates

Cause type: Road Maintenance
Detailed cause: Other
Compliance: Mandatory
Probability: Probable
Validity status: Planned
Road management: Carriageway Closures