M4 Eastbound Jct 17 to 16 lane 3 closure 147/5b - 146/7b

Active

Start time: Wed, Aug 12, 2026 6:49 PM
Expected end: Thu, Aug 13, 2026 5:00 AM
Duration: 10 hours 11 minutes
Road: M4 – M4 Eastbound Between J17 And J16
Category: Road Maintenance
Direction: Eastbound
Carriageway: Dual Carriageway
Lanes affected: Lane 3 closed, 1 of 3 lanes affected
Reason: Repair Work

Live incident

Active roadworks

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First published: Wed, Aug 12, 2026 6:49 PM
Last updated: Wed, Aug 12, 2026 9:27 PM
Cleared: Thu, Aug 13, 2026 5:00 AM

Latest update: M4 Eastbound Jct 17 to 16 lane 3 closure 147/5b - 146/7b

Coordinates: 51.524316, -2.040041
Latitude span: 51.522429 – 51.526164
Longitude span: -2.044830 – -2.035236
Bounding box centre: 51.524297, -2.040033
Location descriptions: M4 eastbound between J17 and J16

Feed validity status: Active
Overall feed start: Wed, Aug 12, 2026 6:49 PM
Overall feed end: Thu, Aug 13, 2026 5:00 AM
Feed window length: 10 hours 11 minutes
Probability code (raw): certain
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

3 coordinate pairs

Description: M4 eastbound between J17 and J16
Carriageway: Dual Carriageway
Lane Usage: Cl3
Lane Number: 3
Lane Status: Closed
Lane Direction: Aligned
Lanes Restricted: 1 lane restricted
Operational Lanes: 3 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: {CE8EA8B7-A1F3-4DCD-A73D-012DAEE489EF}
Linear Element Type: B Carriageway
From Distance: 0 m
To Distance: 159 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.525433 -2.037206
51.525451 -2.037163
51.526164 -2.035236

Segment 2

6 coordinate pairs

Description: M4 eastbound between J17 and J16
Carriageway: Dual Carriageway
Lane Usage: Cl3
Lane Number: 3
Lane Status: Closed
Lane Direction: Aligned
Lanes Restricted: 1 lane restricted
Operational Lanes: 3 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: {18A7AC03-B1E5-4F77-BF84-9B510DF7D45B}
Linear Element Type: B Carriageway
From Distance: 2,387 m
To Distance: 3,013 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.522429 -2.04483
51.522463 -2.044742
51.522509 -2.044627
51.523741 -2.041558
51.525217 -2.037797
51.525433 -2.037206

Geometry type: MultiLineString
Geometry points: 9
First coordinate pair: -2.037206, 51.525433
Road section segments: 1
Road section points: 9

View geometry JSON

{
    "type": "MultiLineString",
    "coordinates": [
        [
            [
                -2.037206,
                51.525433
            ],
            [
                -2.037163,
                51.525451
            ],
            [
                -2.035236,
                51.526164
            ],
            [
                -2.04483,
                51.522429
            ],
            [
                -2.044742,
                51.522463
            ],
            [
                -2.044627,
                51.522509
            ],
            [
                -2.041558,
                51.523741
            ],
            [
                -2.037797,
                51.525217
            ],
            [
                -2.037206,
                51.525433
            ]
        ]
    ]
}

View road section coordinates

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