M4 eastbound lane 1, 2 and 3 closure (39/2 to 36/7)

Planned

Start time: Wed, Mar 18, 2026 8:00 PM
Expected end: Thu, Mar 19, 2026 6:00 AM
Duration: 10 hours
Road: M4 – M4 Eastbound Within J6
Category: Road Maintenance
Direction: Eastbound
Carriageway: Dual Carriageway
Lanes affected: 3 of 1 lanes affected
Reason: Roadworks

Active

Planned

Cleared

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First published: Mon, Feb 9, 2026 1:50 PM
Last updated: Wed, Mar 18, 2026 10:10 PM
Cleared: Thu, Mar 19, 2026 6:00 AM

Latest update: M4 eastbound lane 1, 2 and 3 closure (39/2 to 36/7)

Coordinates: 51.505589, -0.627419
Latitude span: 51.502245 – 51.509516
Longitude span: -0.645434 – -0.611254
Bounding box centre: 51.505881, -0.628344
Location descriptions: M4 eastbound within J6

M4 eastbound between J7 and J6

Feed validity status: Planned
Overall feed start: Wed, Mar 18, 2026 8:00 PM
Overall feed end: Thu, Mar 19, 2026 6:00 AM
Feed window length: 10 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

5 coordinate pairs

Description: M4 eastbound within J6
Carriageway: Dual Carriageway
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: {5DFF4959-E516-85D5-F31F-4457630C46A4}
Linear Element Type: B Carriageway
From Distance: 0 m
To Distance: 293 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.505527 -0.627192
51.505408 -0.62665
51.504802 -0.6239
51.504746 -0.623641
51.504652 -0.623208

Segment 2

3 coordinate pairs

Description: M4 eastbound within J6
Carriageway: Dual Carriageway
Lanes Restricted: 3 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: {8176BCD1-689C-4E5A-824F-2255C5703647}
Linear Element Type: B Carriageway
From Distance: 0 m
To Distance: 118 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.503319 -0.617168
51.503241 -0.616813
51.502962 -0.615556

Segment 3

8 coordinate pairs

Description: M4 eastbound within J6
Carriageway: Dual Carriageway
Lanes Restricted: 3 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: {5D2404AE-75FB-498A-8547-9CD8478AFABC}
Linear Element Type: B Carriageway
From Distance: 0 m
To Distance: 309 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.502962 -0.615556
51.502844 -0.614926
51.502577 -0.613637
51.502422 -0.612705
51.502362 -0.612246
51.502278 -0.611551
51.502252 -0.611333
51.502245 -0.611254

Segment 4

4 coordinate pairs

Description: M4 eastbound within J6
Carriageway: Dual Carriageway
Lanes Restricted: 3 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: {B79FCDE8-F5C1-4F7D-A972-B191F2BAD1C9}
Linear Element Type: B Carriageway
From Distance: 0 m
To Distance: 444 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.504652 -0.623208
51.503861 -0.619563
51.503557 -0.618247
51.503319 -0.617168

Segment 5

8 coordinate pairs

Description: M4 eastbound between J7 and J6
Carriageway: Dual Carriageway
Lanes Restricted: 3 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: {2BA1F17B-638F-459F-9E18-1ADC1FB7CBCD}
Linear Element Type: B Carriageway
From Distance: 0 m
To Distance: 384 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.506655 -0.632432
51.506446 -0.631473
51.506113 -0.629927
51.50579 -0.628409
51.505693 -0.627972
51.505596 -0.627535
51.505596 -0.627534
51.505527 -0.627192

Segment 6

15 coordinate pairs

Description: M4 eastbound between J7 and J6
Carriageway: Dual Carriageway
Lanes Restricted: 3 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: {BAA93F72-4FD8-413B-A997-138A931A25EC}
Linear Element Type: B Carriageway
From Distance: 532 m
To Distance: 1,489 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.509516 -0.645434
51.509406 -0.64491
51.509389 -0.644829
51.509287 -0.644387
51.509193 -0.643975
51.509143 -0.643756
51.508292 -0.639849
51.507918 -0.638129
51.507827 -0.637721
51.507737 -0.637314
51.507435 -0.63591
51.5073 -0.63528
51.507082 -0.634322
51.506732 -0.632771
51.506655 -0.632432

Geometry type: MultiLineString
Geometry points: 43
First coordinate pair: -0.627192, 51.505527
Road section segments: 1
Road section points: 43

View geometry JSON

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    ]
}

View road section coordinates

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