M3 southbound Jct 4a entry slip road closure

Planned

Start time: Mon, Apr 20, 2026 8:00 PM
Expected end: Tue, Apr 21, 2026 5:00 AM
Duration: 9 hours
Road: M3 – M3 Westbound Between J4A And J5
Category: Road Maintenance
Direction: Westbound
Carriageway: Dual Carriageway
Reason: Maintenance Work

Active

Planned

Cleared

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First published: Tue, Dec 9, 2025 3:38 PM
Last updated: Tue, Apr 21, 2026 4:29 AM
Cleared: Tue, Apr 21, 2026 5:00 AM

Latest update: M3 southbound Jct 4a entry slip road closure

Coordinates: 51.301203, -0.801192
Latitude span: 51.300423 – 51.301746
Longitude span: -0.808015 – -0.797435
Bounding box centre: 51.301085, -0.802725
Location descriptions: M3 westbound between J4A and J5

M3 J4A westbound access

Feed validity status: Planned
Overall feed start: Mon, Apr 20, 2026 8:00 PM
Overall feed end: Tue, Apr 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

6 coordinate pairs

Description: M3 westbound between J4A and J5
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: M3
Linear Element Model: The Network Model
Linear Element Id: {D33CEF22-364F-4C85-8FC4-831005FE6958}
Linear Element Type: A Carriageway
From Distance: 0 m
To Distance: 232 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.301637 -0.804717
51.301607 -0.805062
51.301508 -0.806169
51.301408 -0.807219
51.301403 -0.807277
51.301341 -0.808015

Segment 2

26 coordinate pairs

Description: M3 J4A westbound access
Lanes Restricted: 2 lanes restricted
Operational Lanes: 0 operational lanes
Direction On Section: West Bound
Direction Relative: Aligned
Height Grade: Start1 End1
Linear Element Road: M3
Linear Element Model: The Network Model
Linear Element Id: {4E7BF949-7CDD-461E-B272-F43DB63FF803}
Linear Element Type: A Carriageway Entry Slip
From Distance: 3 m
To Distance: 556 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.300443 -0.797435
51.300431 -0.797562
51.300423 -0.797677
51.300425 -0.79782
51.300445 -0.798006
51.300455 -0.798106
51.300502 -0.798378
51.300549 -0.798534
51.300641 -0.798747
51.300751 -0.798974
51.301154 -0.799623
51.301228 -0.799764
51.301273 -0.799849
51.301328 -0.799977
51.301383 -0.800105
51.301476 -0.80036
51.301541 -0.800545
51.301616 -0.800845
51.301635 -0.800973
51.301663 -0.801087
51.301692 -0.801273
51.301731 -0.801587
51.301744 -0.80196
51.301746 -0.802161
51.30168 -0.803626
51.301637 -0.804717

Geometry type: MultiLineString
Geometry points: 32
First coordinate pair: -0.804717, 51.301637
Road section segments: 1
Road section points: 32

View geometry JSON

{
    "type": "MultiLineString",
    "coordinates": [
        [
            [
                -0.804717,
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                51.301508
            ],
            [
                -0.807219,
                51.301408
            ],
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                51.301403
            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
            [
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            ],
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            ],
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            ],
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            ],
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                -0.803626,
                51.30168
            ],
            [
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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