M4 Northbound Jct 4A to Jct 4 lane 1,2 closure

Planned

Start time: Fri, Oct 23, 2026 10:00 PM
Expected end: Sat, Oct 24, 2026 5:00 AM
Duration: 7 hours
Road: M4 – M4 Spur (Heathrow) Southbound Between M4 And J4A
Category: Road Maintenance
Direction: Eastbound
Carriageway: Dual Carriageway
Lanes affected: 2 of 1 lanes affected, 2 of 2 lanes affected
Reason: Tree And Vegetation Cutting Work

Live incident

Active roadworks

Planned

Cleared

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First published: Wed, Jul 29, 2026 2:39 PM
Last updated: Fri, Oct 23, 2026 12:05 AM
Cleared: Sat, Oct 24, 2026 5:00 AM

Latest update: M4 Northbound Jct 4A to Jct 4 lane 1,2 closure

Coordinates: 51.486794, -0.453171
Latitude span: 51.482789 – 51.490302
Longitude span: -0.453881 – -0.452713
Bounding box centre: 51.486546, -0.453297
Location descriptions: M4 spur (Heathrow) southbound between M4 and J4A

Feed validity status: Planned
Overall feed start: Fri, Oct 23, 2026 10:00 PM
Overall feed end: Sat, Oct 24, 2026 5:00 AM
Feed window length: 7 hours
Probability code (raw): probable
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

2 coordinate pairs

Description: M4 spur (Heathrow) southbound between M4 and J4A
Carriageway: Dual Carriageway
Lanes Restricted: 2 lanes restricted
Operational Lanes: 1 operational lane
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: {97A079A4-D539-4C77-BA82-1A9E09163D0B}
Linear Element Type: B Carriageway
From Distance: 0 m
To Distance: 219 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.482866 -0.452874
51.484836 -0.452721

Segment 2

2 coordinate pairs

Description: M4 spur (Heathrow) southbound between M4 and J4A
Carriageway: Dual Carriageway
Lanes Restricted: 2 lanes restricted
Operational Lanes: 1 operational lane
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: {0EB04764-4287-4D40-8593-2DA19D575B07}
Linear Element Type: B Carriageway
From Distance: 93 m
To Distance: 102 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.482789 -0.452881
51.482866 -0.452874

Segment 3

3 coordinate pairs

Description: M4 spur (Heathrow) southbound between M4 and J4A
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: {BB41FD99-93C9-4650-80B5-8CBA01C969EE}
Linear Element Type: B Carriageway
From Distance: 0 m
To Distance: 52 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.489833 -0.453834
51.489995 -0.453857
51.490302 -0.453881

Segment 4

14 coordinate pairs

Description: M4 spur (Heathrow) southbound between M4 and J4A
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: {0C37367B-0F7F-4670-899D-6C162710DACF}
Linear Element Type: B Carriageway
From Distance: 0 m
To Distance: 562 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.484836 -0.452721
51.48507 -0.452713
51.48534 -0.452732
51.485754 -0.452762
51.486051 -0.452795
51.48624 -0.452818
51.486439 -0.452868
51.48698 -0.452994
51.487341 -0.453097
51.488091 -0.45336
51.488832 -0.453594
51.488859 -0.453607
51.489517 -0.453772
51.489833 -0.453834

Geometry type: MultiLineString
Geometry points: 21
First coordinate pair: -0.452874, 51.482866
Road section segments: 1
Road section points: 21

View geometry JSON

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    "type": "MultiLineString",
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                51.482789
            ],
            [
                -0.452874,
                51.482866
            ],
            [
                -0.453834,
                51.489833
            ],
            [
                -0.453857,
                51.489995
            ],
            [
                -0.453881,
                51.490302
            ],
            [
                -0.452721,
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            ],
            [
                -0.452713,
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            ],
            [
                -0.452732,
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            ],
            [
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            ],
            [
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            ],
            [
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            ],
            [
                -0.452994,
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            ],
            [
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            ],
            [
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            ],
            [
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            ],
            [
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            ],
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                -0.453772,
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            ],
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            ]
        ]
    ]
}

View road section coordinates

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