Crash View

M4 Eastbound Jct 3 to Jct 1 Carriageway closure

Planned

M4 Eastbound Jct 3 to Jct 1 Carriageway closure

Start time
Fri, Aug 7, 2026 10:00 PM
Expected end
Sat, Aug 8, 2026 5:00 AM
Duration
7 hours
Road
M4 – M4 J2 Eastbound Access
Category
Road Maintenance
Direction
Eastbound
Carriageway
Dual Carriageway
Reason
Roadworks
Live incident
Active roadworks
Planned
Cleared
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First published
Fri, Aug 7, 2026 1:55 AM
Last updated
Fri, Aug 7, 2026 2:46 AM
Cleared
Sat, Aug 8, 2026 5:00 AM
  • Latest update: M4 Eastbound Jct 3 to Jct 1 Carriageway closure
Coordinates
51.491404, -0.375946
Latitude span
51.488065 – 51.493002
Longitude span
-0.418714 – -0.291778
Bounding box centre
51.490534, -0.355246
Location descriptions
  • M4 J2 eastbound access
  • M4 eastbound between J2 and J1
  • M4 eastbound within J3
  • M4 eastbound between J3 and J2
  • M4 eastbound at the Heston services slip road between J3 and J2
  • M4 eastbound between J4 and J3
  • M4 J3 eastbound access
Feed validity status
Planned
Overall feed start
Fri, Aug 7, 2026 10:00 PM
Overall feed end
Sat, Aug 8, 2026 5:00 AM
Feed window length
7 hours
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

3 coordinate pairs
Description
M4 J2 eastbound access
Lanes Restricted
2 lanes restricted
Operational Lanes
0 operational lanes
Direction On Section
East Bound
Direction Relative
Aligned
Height Grade
Start2 End1
Linear Element Road
M4
Linear Element Model
The Network Model
Linear Element Id
{97010937-D490-4A3B-8C3A-70282937736E}
Linear Element Type
B Carriageway Entry Slip
From Distance
0 m
To Distance
45 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.491475 -0.294056
51.491444 -0.293812
51.491393 -0.293411

Segment 2

7 coordinate pairs
Description
M4 eastbound between J2 and J1
Carriageway
Dual Carriageway
Lanes Restricted
2 lanes restricted
Operational Lanes
0 operational lanes
Direction On Section
East Bound
Direction Relative
Aligned
Height Grade
Start1 End2
Linear Element Road
M4
Linear Element Model
The Network Model
Linear Element Id
{A9CA6734-ACA2-44DE-A0B0-408D1A917064}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
115 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.491393 -0.293411
51.491405 -0.292949
51.491426 -0.29256
51.491459 -0.292328
51.491467 -0.29227
51.491533 -0.291879
51.491555 -0.291778

Segment 3

12 coordinate pairs
Description
M4 J2 eastbound access
Lanes Restricted
2 lanes restricted
Operational Lanes
0 operational lanes
Direction On Section
East Bound
Direction Relative
Aligned
Height Grade
Start1 End2
Linear Element Road
M4
Linear Element Model
The Network Model
Linear Element Id
{634CFD26-424B-482A-98E1-06B99A366AF0}
Linear Element Type
B Carriageway Entry Slip
From Distance
47 m
To Distance
299 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.491587 -0.297673
51.49159 -0.297639
51.491604 -0.297407
51.49162 -0.297234
51.491616 -0.296946
51.491607 -0.295938
51.491603 -0.295477
51.491589 -0.295089
51.491555 -0.294615
51.491535 -0.2945
51.491515 -0.294371
51.491475 -0.294056

Segment 4

8 coordinate pairs
Description
M4 eastbound within J3
Carriageway
Dual Carriageway
Lanes Restricted
4 lanes restricted
Operational Lanes
0 operational lanes
Direction On Section
East Bound
Direction Relative
Aligned
Height Grade
Start2 End1
Linear Element Road
M4
Linear Element Model
The Network Model
Linear Element Id
{03966E84-CFFC-46FD-B377-BF4FCACAA1D0}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
383 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.492306 -0.409498
51.492214 -0.408723
51.492075 -0.407763
51.491978 -0.40719
51.4919 -0.40676
51.491813 -0.406346
51.491653 -0.40559
51.491347 -0.404195

Segment 5

2 coordinate pairs
Description
M4 eastbound between J3 and J2
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
{F8654D2D-9455-4A9F-B627-4C4520B438E9}
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 
51.491347 -0.404195
51.491154 -0.403502

Segment 6

6 coordinate pairs
Description
M4 eastbound within J3
Carriageway
Dual Carriageway
Lanes Restricted
4 lanes restricted
Operational Lanes
0 operational lanes
Direction On Section
East Bound
Direction Relative
Aligned
Height Grade
Start2 End2
Linear Element Road
M4
Linear Element Model
The Network Model
Linear Element Id
{AADA7BE3-D2A5-45C6-8721-FB0703C79781}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
114 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.492464 -0.411133
51.492419 -0.41058
51.492409 -0.410445
51.492336 -0.409713
51.492308 -0.409507
51.492306 -0.409498

Segment 7

5 coordinate pairs
Description
M4 eastbound between J3 and J2
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
{32A69C9A-4F17-492A-BF68-6A79DFF275FB}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
272 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.491154 -0.403502
51.491098 -0.403317
51.490908 -0.40256
51.49068 -0.401729
51.490159 -0.399914

Segment 8

5 coordinate pairs
Description
M4 eastbound at the Heston services slip road between J3 and J2
Lanes Restricted
1 lane 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
{B3438A93-DD85-4D0B-ADEB-5B1E113C0FD1}
Linear Element Type
B Carriageway Entry Slip
From Distance
40 m
To Distance
299 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.488103 -0.386032
51.488102 -0.385957
51.488091 -0.384668
51.488065 -0.38415
51.488154 -0.382314

Segment 9

2 coordinate pairs
Description
M4 eastbound between J3 and J2
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
{F8654D2D-9455-4A9F-B627-4C4520B438E9}
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 
51.491347 -0.404195
51.491154 -0.403502

Segment 10

6 coordinate pairs
Description
M4 eastbound within J3
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
{EB54E0C4-2FBF-4742-8398-3A5418544C3D}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
343 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.492862 -0.416739
51.492658 -0.413852
51.492629 -0.413448
51.492572 -0.412528
51.492528 -0.411968
51.492517 -0.411829

Segment 11

3 coordinate pairs
Description
M4 eastbound between J4 and J3
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
{E54946B4-B306-4292-9E00-7F994BD0C490}
Linear Element Type
B Carriageway
From Distance
694 m
To Distance
832 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.493002 -0.418714
51.492951 -0.417974
51.492862 -0.416739

Segment 12

13 coordinate pairs
Description
M4 J3 eastbound access
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
{08CC5015-4FAE-4F3D-90A9-C6DACFBCC7B4}
Linear Element Type
B Carriageway Entry Slip
From Distance
9 m
To Distance
414 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.492661 -0.409583
51.492639 -0.409529
51.492611 -0.409444
51.492582 -0.40933
51.492385 -0.408014
51.492365 -0.407882
51.49224 -0.407267
51.492143 -0.40681
51.491934 -0.405938
51.491801 -0.405424
51.491726 -0.405196
51.491698 -0.405125
51.491347 -0.404195

Segment 13

3 coordinate pairs
Description
M4 eastbound between J3 and J2
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
{A6AA00B3-A474-49F1-AA17-420D6D7CBA98}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
71 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.488154 -0.382314
51.488228 -0.381654
51.488273 -0.381305

Segment 14

7 coordinate pairs
Description
M4 eastbound between J3 and J2
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
{32A69C9A-4F17-492A-BF68-6A79DFF275FB}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
597 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.491154 -0.403502
51.491098 -0.403317
51.490908 -0.40256
51.49068 -0.401729
51.489992 -0.399333
51.489152 -0.396262
51.488996 -0.395629

Segment 15

3 coordinate pairs
Description
M4 eastbound within J3
Carriageway
Dual Carriageway
Lanes Restricted
4 lanes restricted
Operational Lanes
0 operational lanes
Direction On Section
East Bound
Direction Relative
Aligned
Height Grade
Start1 End2
Linear Element Road
M4
Linear Element Model
The Network Model
Linear Element Id
{C14034B4-4BBA-4C84-870E-3F48BB8ED5A4}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
48 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.492517 -0.411829
51.492485 -0.411407
51.492464 -0.411133
Geometry type
MultiLineString
Geometry points
85
First coordinate pair
-0.294056, 51.491475
Road section segments
1
Road section points
85
View geometry JSON 
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            ],
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            ],
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            ],
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            ],
            [
                -0.409529,
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            ],
            [
                -0.409444,
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            ],
            [
                -0.40933,
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            ],
            [
                -0.408014,
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            ],
            [
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            ],
            [
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            ],
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            ],
            [
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            ],
            [
                -0.405424,
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            ],
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            ],
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            ],
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}
View road section coordinates 
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        ],
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        [
            -0.413448,
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        [
            -0.412528,
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]
Cause type
Road Maintenance
Detailed cause
Roadworks
Compliance
Mandatory
Probability
Probable
Validity status
Planned
Road management
Carriageway Closures
Feed provider
National Highways
Data source
Roadworks
Feed version
1
Record created
Fri, Aug 7, 2026 1:55 AM
Record versioned
Fri, Aug 7, 2026 2:46 AM
Coordinate source
Geometry

Driving on the M4? See every live closure, roadwork and planned restriction on this road.

M4 live closures

Related incidents

M4 westbound Jct 11 entry slip road closure

Active Roadworks National Highways
Reading M4 · M4 J11 Westbound Access

Expected to clear in 1 hour 26 minutes

Started 6 Aug 2026, 20:06 Expected clear 7 Aug 2026, 05:00

M4 westbound Jct 11 entry slip road closure

Category: Road Maintenance
View update

M4 eastbound Jct 7 entry slip road closure

Planned Roadworks National Highways
Slough M4 · M4 Eastbound Between J7 And J6

Expected to clear in 1 hour 26 minutes

Started 6 Aug 2026, 20:00 Expected clear 7 Aug 2026, 05:00

M4 eastbound Jct 7 entry slip road closure

Category: Road Maintenance
View update

M4 eastbound lane 1, 2 and 3 closure (34/6 to 31/5)

Planned Roadworks National Highways
Slough M4 · M4 Eastbound Between J6 And J5

Expected to clear in 1 hour 26 minutes

Started 6 Aug 2026, 20:00 Expected clear 7 Aug 2026, 05:00

M4 eastbound lane 1, 2 and 3 closure (34/6 to 31/5)

Category: Road Maintenance
View update

M4 eastbound lane 1 and lane 2 closure (81/3 to 80/4)

Planned Roadworks National Highways
West Berkshire M4 · M4 Eastbound Between J13 And J12

Expected to clear in 1 hour 26 minutes

Started 6 Aug 2026, 19:00 Expected clear 7 Aug 2026, 05:00

M4 eastbound lane 1 and lane 2 closure (81/3 to 80/4)

Category: Road Maintenance
View update

M4 eastbound lane 1, 2 and 3 closure (34/6 to 31/5)

Planned Roadworks National Highways
Slough M4 · M4 Eastbound Between J6 And J5

Starts in 16 hours 26 minutes

Starts 7 Aug 2026, 20:00 Expected clear 8 Aug 2026, 05:00

M4 eastbound lane 1, 2 and 3 closure (34/6 to 31/5)

Category: Road Maintenance
View update

M4 eastbound lane 1 and 2 closure (81/3 to 80/4)

Planned Roadworks National Highways
West Berkshire M4 · M4 Eastbound Between J13 And J12

Starts in 16 hours 26 minutes

Starts 7 Aug 2026, 20:00 Expected clear 8 Aug 2026, 05:00

M4 eastbound lane 1 and 2 closure (81/3 to 80/4)

Category: Road Maintenance
View update