M4 westbound Reading Services entry slip road closure

Cleared

Start time: Wed, May 20, 2026 8:00 PM
Expected end: Thu, May 21, 2026 5:00 AM
Duration: 9 hours
Road: M4 – M4 Entry Slip At Reading Services
Category: Road Maintenance
Direction: Westbound
Carriageway: Dual Carriageway
Reason: Maintenance Work

Live incident

Active roadworks

Planned

Cleared

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First published: Thu, Dec 18, 2025 10:46 AM
Last updated: Thu, May 21, 2026 3:00 AM
Cleared: Thu, May 21, 2026 5:00 AM

Latest update: M4 westbound Reading Services entry slip road closure

Coordinates: 51.423789, -1.033062
Latitude span: 51.423167 – 51.424816
Longitude span: -1.036055 – -1.031570
Bounding box centre: 51.423992, -1.033813
Location descriptions: M4 entry slip at Reading Services

M4 westbound between J11 and J12

Feed validity status: Planned
Overall feed start: Wed, May 20, 2026 8:00 PM
Overall feed end: Thu, May 21, 2026 5:00 AM
Feed window length: 9 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

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 2

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

Geometry type: MultiLineString
Geometry points: 28
First coordinate pair: -1.031570, 51.423167
Road section segments: 1
Road section points: 28

View geometry JSON

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    "type": "MultiLineString",
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            ],
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    ]
}

View road section coordinates

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