M4 Westbound Jct 4 to M25 Anticlockwise Jct 15 Lane 2 closure

Cleared

Start time: Mon, Mar 9, 2026 10:00 PM
Expected end: Tue, Mar 10, 2026 5:30 AM
Duration: 7 hours 30 minutes
Road: M4 – Link Road From M4 J4B Westbound To M25 J15
Category: Road Maintenance
Direction: Westbound
Lanes affected: Lane 2 closed, 1 of 2 lanes affected
Reason: Roadworks

Active

Planned

Cleared

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First published: Mon, Mar 9, 2026 9:52 PM
Last updated: Tue, Mar 10, 2026 3:34 AM
Cleared: Tue, Mar 10, 2026 5:30 AM

Latest update: M4 Westbound Jct 4 to M25 Anticlockwise Jct 15 Lane 2 closure

Coordinates: 51.493996, -0.487690
Latitude span: 51.493720 – 51.494094
Longitude span: -0.490088 – -0.483827
Bounding box centre: 51.493907, -0.486958
Location descriptions: link road from M4 J4B westbound to M25 J15

Feed validity status: Active
Overall feed start: Mon, Mar 9, 2026 10:00 PM
Overall feed end: Tue, Mar 10, 2026 5:30 AM
Feed window length: 7 hours 30 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

7 coordinate pairs

Description: link road from M4 J4B westbound to M25 J15
Lane Usage: Cl2
Lane Number: 2
Lane Status: Closed
Lane Direction: Aligned
Lanes Restricted: 1 lane restricted
Operational Lanes: 2 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: {85BDE29F-7804-469F-8833-D56D7807DFB7}
Linear Element Type: B Carriageway Entry Slip
From Distance: 601 m
To Distance: 757 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.494077 -0.487924
51.494059 -0.488279
51.493995 -0.488886
51.493961 -0.489089
51.493911 -0.489335
51.493783 -0.489887
51.49372 -0.490088

Segment 2

6 coordinate pairs

Description: link road from M4 J4B westbound to M25 J15
Lane Usage: Cl2
Lane Number: 2
Lane Status: Closed
Lane Direction: Aligned
Lanes Restricted: 1 lane restricted
Operational Lanes: 2 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: {85BDE29F-7804-469F-8833-D56D7807DFB7}
Linear Element Type: B Carriageway Entry Slip
From Distance: 316 m
To Distance: 598 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.494077 -0.483827
51.494062 -0.484331
51.494054 -0.485095
51.494094 -0.487485
51.49408 -0.48786
51.494079 -0.487882

Geometry type: MultiLineString
Geometry points: 13
First coordinate pair: -0.487924, 51.494077
Road section segments: 1
Road section points: 13

View geometry JSON

{
    "type": "MultiLineString",
    "coordinates": [
        [
            [
                -0.487924,
                51.494077
            ],
            [
                -0.488279,
                51.494059
            ],
            [
                -0.488886,
                51.493995
            ],
            [
                -0.489089,
                51.493961
            ],
            [
                -0.489335,
                51.493911
            ],
            [
                -0.489887,
                51.493783
            ],
            [
                -0.490088,
                51.49372
            ],
            [
                -0.483827,
                51.494077
            ],
            [
                -0.484331,
                51.494062
            ],
            [
                -0.485095,
                51.494054
            ],
            [
                -0.487485,
                51.494094
            ],
            [
                -0.48786,
                51.49408
            ],
            [
                -0.487882,
                51.494079
            ]
        ]
    ]
}

View road section coordinates

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