M4 eastbound Jct 17 to Jct 16 - lane closure

Active

M4 eastbound Jct 17 to Jct 16 - lane closure

Start time
Thu, Oct 15, 2026 8:12 PM
Expected end
Fri, Oct 16, 2026 5:00 AM
Duration
8 hours 48 minutes
Road
M4 – M4 Westbound Between J16 And J17
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 15, 2026 8:12 PM
Last updated
Thu, Oct 15, 2026 10:47 PM
Cleared
Fri, Oct 16, 2026 5:00 AM
  • Latest update: M4 eastbound Jct 17 to Jct 16 - lane closure
Coordinates
51.543424, -1.975823
Latitude span
51.540871 – 51.545090
Longitude span
-1.982071 – -1.970821
Bounding box centre
51.542981, -1.976446
Location descriptions
  • M4 westbound between J16 and J17
Feed validity status
Active
Overall feed start
Thu, Oct 15, 2026 8:12 PM
Overall feed end
Fri, Oct 16, 2026 5:00 AM
Feed window length
8 hours 48 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

8 coordinate pairs
Description
M4 westbound between J16 and J17
Carriageway
Dual Carriageway
Lane Usage
Lh
Lane Number
0
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
0 lanes restricted
Operational Lanes
4 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
{915F595F-2A6E-43A8-B45A-D5AF988D5977}
Linear Element Type
A Carriageway
From Distance
435 m
To Distance
707 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list
51.54509 -1.970821
51.544992 -1.971204
51.544615 -1.972546
51.544525 -1.972878
51.54431 -1.973555
51.544255 -1.973728
51.544121 -1.974132
51.544039 -1.974372

Segment 2

13 coordinate pairs
Description
M4 westbound between J16 and J17
Carriageway
Dual Carriageway
Lane Usage
Lh
Lane Number
0
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
0 lanes restricted
Operational Lanes
4 operational lanes
Direction On Section
West Bound
Direction Relative
Aligned
Height Grade
Start2 End1
Linear Element Road
M4
Linear Element Model
The Network Model
Linear Element Id
{334A9FE2-1378-485B-8046-2507C5B7732F}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
640 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list
51.544039 -1.974372
51.544038 -1.974376
51.544034 -1.974384
51.543698 -1.975358
51.543408 -1.976152
51.543339 -1.976339
51.543015 -1.977176
51.542863 -1.977565
51.542377 -1.978733
51.541919 -1.979757
51.541397 -1.980897
51.540957 -1.981863
51.540871 -1.982071
Geometry type
MultiLineString
Geometry points
21
First coordinate pair
-1.970821, 51.545090
Road section segments
1
Road section points
21
View geometry JSON
{
    "type": "MultiLineString",
    "coordinates": [
        [
            [
                -1.970821,
                51.54509
            ],
            [
                -1.971204,
                51.544992
            ],
            [
                -1.972546,
                51.544615
            ],
            [
                -1.972878,
                51.544525
            ],
            [
                -1.973555,
                51.54431
            ],
            [
                -1.973728,
                51.544255
            ],
            [
                -1.974132,
                51.544121
            ],
            [
                -1.974372,
                51.544039
            ],
            [
                -1.974372,
                51.544039
            ],
            [
                -1.974376,
                51.544038
            ],
            [
                -1.974384,
                51.544034
            ],
            [
                -1.975358,
                51.543698
            ],
            [
                -1.976152,
                51.543408
            ],
            [
                -1.976339,
                51.543339
            ],
            [
                -1.977176,
                51.543015
            ],
            [
                -1.977565,
                51.542863
            ],
            [
                -1.978733,
                51.542377
            ],
            [
                -1.979757,
                51.541919
            ],
            [
                -1.980897,
                51.541397
            ],
            [
                -1.981863,
                51.540957
            ],
            [
                -1.982071,
                51.540871
            ]
        ]
    ]
}
View road section coordinates
[
    [
        [
            -1.970821,
            51.54509
        ],
        [
            -1.971204,
            51.544992
        ],
        [
            -1.972546,
            51.544615
        ],
        [
            -1.972878,
            51.544525
        ],
        [
            -1.973555,
            51.54431
        ],
        [
            -1.973728,
            51.544255
        ],
        [
            -1.974132,
            51.544121
        ],
        [
            -1.974372,
            51.544039
        ],
        [
            -1.974372,
            51.544039
        ],
        [
            -1.974376,
            51.544038
        ],
        [
            -1.974384,
            51.544034
        ],
        [
            -1.975358,
            51.543698
        ],
        [
            -1.976152,
            51.543408
        ],
        [
            -1.976339,
            51.543339
        ],
        [
            -1.977176,
            51.543015
        ],
        [
            -1.977565,
            51.542863
        ],
        [
            -1.978733,
            51.542377
        ],
        [
            -1.979757,
            51.541919
        ],
        [
            -1.980897,
            51.541397
        ],
        [
            -1.981863,
            51.540957
        ],
        [
            -1.982071,
            51.540871
        ]
    ]
]
Cause type
Road Maintenance
Detailed cause
Maintenance Work
Compliance
Mandatory
Probability
Certain
Validity status
Active
Road management
Other
Feed provider
National Highways
Data source
Roadworks
Feed version
1
Record created
Thu, Oct 15, 2026 8:12 PM
Record versioned
Thu, Oct 15, 2026 10:47 PM
Coordinate source
Geometry

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