M4 westbound Jct 21 to 22 lane closure 194/2-195/0

Planned

Start time: Tue, Aug 11, 2026 7:00 PM
Expected end: Wed, Aug 12, 2026 5:00 AM
Duration: 10 hours
Road: M4 – M4 Westbound Between J21 And J22
Category: Road Maintenance
Direction: Westbound
Carriageway: Dual Carriageway
Lanes affected: Lane 2 closed, 1 of 2 lanes affected
Reason: Maintenance Work

Live incident

Active roadworks

Planned

Cleared

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First published: Tue, Aug 11, 2026 12:49 AM
Last updated: Tue, Aug 11, 2026 4:24 AM
Cleared: Wed, Aug 12, 2026 5:00 AM

Latest update: M4 westbound Jct 21 to 22 lane closure 194/2-195/0

Coordinates: 51.569047, -2.644608
Latitude span: 51.569001 – 51.569132
Longitude span: -2.650393 – -2.641280
Bounding box centre: 51.569067, -2.645837
Location descriptions: M4 westbound between J21 and J22

Feed validity status: Planned
Overall feed start: Tue, Aug 11, 2026 7:00 PM
Overall feed end: Wed, Aug 12, 2026 5:00 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

2 coordinate pairs

Description: M4 westbound between J21 and J22
Carriageway: Dual Carriageway
Lane Usage: Cl2
Lane Number: 2
Lane Status: Closed
Lane Direction: Aligned
Lanes Restricted: 1 lane restricted
Operational Lanes: 2 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: {7041383B-D979-4350-B572-8E66314D1183}
Linear Element Type: A Carriageway
From Distance: 0 m
To Distance: 24 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.569124 -2.650043
51.569132 -2.650393

Segment 2

2 coordinate pairs

Description: M4 westbound between J21 and J22
Carriageway: Dual Carriageway
Lane Usage: Cl2
Lane Number: 2
Lane Status: Closed
Lane Direction: Aligned
Lanes Restricted: 1 lane restricted
Operational Lanes: 2 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: {DD34EB94-3EC3-4B7E-ABFE-63609D6DF200}
Linear Element Type: A Carriageway
From Distance: 0 m
To Distance: 11 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.569015 -2.642048
51.569014 -2.642206

Segment 3

3 coordinate pairs

Description: M4 westbound between J21 and J22
Carriageway: Dual Carriageway
Lane Usage: Cl2
Lane Number: 2
Lane Status: Closed
Lane Direction: Aligned
Lanes Restricted: 1 lane restricted
Operational Lanes: 2 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: {1AC52390-58BA-4539-93F8-63A192BD315F}
Linear Element Type: A Carriageway
From Distance: 315 m
To Distance: 368 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.56905 -2.64128
51.569036 -2.641572
51.569015 -2.642048

Segment 4

6 coordinate pairs

Description: M4 westbound between J21 and J22
Carriageway: Dual Carriageway
Lane Usage: Cl2
Lane Number: 2
Lane Status: Closed
Lane Direction: Aligned
Lanes Restricted: 1 lane restricted
Operational Lanes: 2 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: {965D5EF4-AAF3-4A9F-8641-42EF0FD23B94}
Linear Element Type: A Carriageway
From Distance: 0 m
To Distance: 543 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.569014 -2.642206
51.569001 -2.642913
51.569006 -2.643764
51.569025 -2.645107
51.569055 -2.646276
51.569124 -2.650043

Geometry type: MultiLineString
Geometry points: 13
First coordinate pair: -2.650043, 51.569124
Road section segments: 1
Road section points: 13

View geometry JSON

{
    "type": "MultiLineString",
    "coordinates": [
        [
            [
                -2.650043,
                51.569124
            ],
            [
                -2.650393,
                51.569132
            ],
            [
                -2.642048,
                51.569015
            ],
            [
                -2.642206,
                51.569014
            ],
            [
                -2.64128,
                51.56905
            ],
            [
                -2.641572,
                51.569036
            ],
            [
                -2.642048,
                51.569015
            ],
            [
                -2.642206,
                51.569014
            ],
            [
                -2.642913,
                51.569001
            ],
            [
                -2.643764,
                51.569006
            ],
            [
                -2.645107,
                51.569025
            ],
            [
                -2.646276,
                51.569055
            ],
            [
                -2.650043,
                51.569124
            ]
        ]
    ]
}

View road section coordinates

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