M4 westbound Reading Services closure

Cleared

Start time: Thu, Oct 8, 2026 7:56 PM
Expected end: Fri, Oct 9, 2026 5:00 AM
Duration: 4 hours 29 minutes 2 seconds
Road: M4 – M4 Westbound Between J11 And J12
Category: Road Maintenance
Direction: Westbound
Carriageway: Dual Carriageway
Reason: Maintenance Work

Live incident

Active roadworks

Planned

Cleared

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First published: Thu, Oct 8, 2026 7:56 PM
Last updated: Fri, Oct 9, 2026 12:06 AM
Cleared: Fri, Oct 9, 2026 12:25 AM

Latest update: M4 westbound Reading Services closure

Coordinates: 51.423350, -1.031387
Latitude span: 51.422300 – 51.424816
Longitude span: -1.036055 – -1.026305
Bounding box centre: 51.423558, -1.031180
Location descriptions: M4 westbound between J11 and J12

M4 entry slip at Reading Services

M4 exit slip at Reading Services

Feed validity status: Active
Overall feed start: Thu, Oct 8, 2026 7:56 PM
Overall feed end: Fri, Oct 9, 2026 5:00 AM
Feed window length: 9 hours 4 minutes
Probability code (raw): certain
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 westbound between J11 and J12
Carriageway: Dual Carriageway
Lanes Restricted: 4 lanes restricted
Operational Lanes: 0 operational lanes
Direction On Section: West Bound
Direction Relative: Aligned
Height Grade: Start1 End2
Linear Element Road: M4
Linear Element Model: The Network Model
Linear Element Id: {DD3ED763-6B8B-436F-8F11-0D67F2F7D4E4}
Linear Element Type: A Carriageway
From Distance: 0 m
To Distance: 138 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.424249 -1.034282
51.424765 -1.035906
51.424816 -1.036055

Segment 2

25 coordinate pairs

Description: M4 entry slip at Reading Services
Lanes Restricted: 1 lane restricted
Operational Lanes: 0 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: {78F6A432-5A91-464A-26B5-44AE28098215}
Linear Element Type: A Carriageway Entry Slip
From Distance: 0 m
To Distance: 226 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.423167 -1.03157
51.423228 -1.031635
51.423258 -1.031667
51.423302 -1.031718
51.423337 -1.031778
51.42337 -1.031836
51.423406 -1.031934
51.423441 -1.032027
51.423463 -1.032091
51.423501 -1.032202
51.423561 -1.032374
51.423666 -1.03269
51.42371 -1.032821
51.423735 -1.032893
51.423801 -1.03309
51.423805 -1.033099
51.423813 -1.033117
51.423903 -1.033332
51.423964 -1.033502
51.423974 -1.033535
51.424018 -1.033672
51.424164 -1.034135
51.424195 -1.034226
51.424222 -1.034254
51.424249 -1.034282

Segment 3

19 coordinate pairs

Description: M4 exit slip at Reading Services
Lanes Restricted: 1 lane restricted
Operational Lanes: 0 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: {049BD5B0-4E5B-B8A0-D9B9-3F9EFDC34E69}
Linear Element Type: A Carriageway Exit Slip
From Distance: 0 m
To Distance: 208 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.422653 -1.028052
51.422647 -1.028177
51.422669 -1.028399
51.422671 -1.028408
51.422672 -1.028414
51.422711 -1.02861
51.422748 -1.028835
51.422789 -1.029114
51.422816 -1.029296
51.422856 -1.029572
51.422859 -1.029596
51.422956 -1.030196
51.422958 -1.03021
51.423002 -1.030499
51.422999 -1.030695
51.422997 -1.030713
51.422977 -1.030883
51.422963 -1.030938
51.422954 -1.03097

Segment 4

3 coordinate pairs

Description: M4 westbound between J11 and J12
Carriageway: Dual Carriageway
Lanes Restricted: 4 lanes restricted
Operational Lanes: 0 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: {04195248-78FF-4235-97B9-49703B81A0D5}
Linear Element Type: A Carriageway
From Distance: 1,905 m
To Distance: 2,032 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.4223 -1.026305
51.422584 -1.027713
51.422653 -1.028052

Geometry type: MultiLineString
Geometry points: 50
First coordinate pair: -1.034282, 51.424249
Road section segments: 1
Road section points: 50

View geometry JSON

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        ]
    ]
}

View road section coordinates

Cause type: Road Maintenance
Detailed cause: Maintenance Work
Compliance: Mandatory
Probability: Certain
Validity status: Active
Road management: Carriageway Closures