Crash View

M4 both directions Jct 16 to Jct 17 - hard shoulder only

Planned

M4 both directions Jct 16 to Jct 17 - hard shoulder only

Start time
Tue, Aug 11, 2026 6:00 AM
Expected end
Tue, Aug 11, 2026 4:00 PM
Duration
10 hours
Road
M4 – M4 Eastbound Between J17 And J16
Category
Road Maintenance
Direction
Eastbound
Carriageway
Dual Carriageway
Reason
Maintenance Work
Live incident
Active roadworks
Planned
Cleared
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First published
Mon, Aug 10, 2026 1:39 PM
Last updated
Tue, Aug 11, 2026 3:46 AM
Cleared
Tue, Aug 11, 2026 4:00 PM
  • Latest update: M4 both directions Jct 16 to Jct 17 - hard shoulder only
Coordinates
51.547064, -1.958268
Latitude span
51.546031 – 51.547661
Longitude span
-1.967557 – -1.947061
Bounding box centre
51.546846, -1.957309
Location descriptions
  • M4 eastbound between J17 and J16
Feed validity status
Planned
Overall feed start
Tue, Aug 11, 2026 6:00 AM
Overall feed end
Tue, Aug 11, 2026 4:00 PM
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

8 coordinate pairs
Description
M4 eastbound between J17 and J16
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
East Bound
Direction Relative
Aligned
Height Grade
Start2 End2
Linear Element Road
M4
Linear Element Model
The Network Model
Linear Element Id
{6A5D848B-5980-4BD6-AD8E-BE2FFD49ED6C}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
293 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.547106 -1.960073
51.547218 -1.9587
51.547254 -1.958123
51.547281 -1.957748
51.547326 -1.956594
51.547345 -1.955891
51.547347 -1.955858
51.547347 -1.955855

Segment 2

4 coordinate pairs
Description
M4 eastbound between J17 and J16
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
East Bound
Direction Relative
Aligned
Height Grade
Start2 End1
Linear Element Road
M4
Linear Element Model
The Network Model
Linear Element Id
{5CD975B7-7328-47EF-BF84-9C1174C6F5C6}
Linear Element Type
B Carriageway
From Distance
524 m
To Distance
710 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.546031 -1.967557
51.546223 -1.966618
51.546447 -1.965334
51.54651 -1.964974

Segment 3

9 coordinate pairs
Description
M4 eastbound between J17 and J16
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
East Bound
Direction Relative
Aligned
Height Grade
Start1 End2
Linear Element Road
M4
Linear Element Model
The Network Model
Linear Element Id
{9B52E608-97DD-41CD-A994-7C87AB863CFA}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
346 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.54651 -1.964974
51.546519 -1.964923
51.546546 -1.964772
51.546725 -1.96356
51.546815 -1.962911
51.546887 -1.962248
51.54703 -1.960993
51.547075 -1.960445
51.547106 -1.960073

Segment 4

9 coordinate pairs
Description
M4 eastbound between J17 and J16
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
East Bound
Direction Relative
Aligned
Height Grade
Start2 End2
Linear Element Road
M4
Linear Element Model
The Network Model
Linear Element Id
{83F15CE1-F43D-4701-B98F-C442CCA10D5E}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
611 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.547347 -1.955855
51.547361 -1.955267
51.547377 -1.953941
51.547405 -1.951648
51.547431 -1.950912
51.547476 -1.949859
51.547583 -1.947941
51.547636 -1.947321
51.547661 -1.947061
Geometry type
MultiLineString
Geometry points
30
First coordinate pair
-1.960073, 51.547106
Road section segments
1
Road section points
30
View geometry JSON 
{
    "type": "MultiLineString",
    "coordinates": [
        [
            [
                -1.960073,
                51.547106
            ],
            [
                -1.9587,
                51.547218
            ],
            [
                -1.958123,
                51.547254
            ],
            [
                -1.957748,
                51.547281
            ],
            [
                -1.956594,
                51.547326
            ],
            [
                -1.955891,
                51.547345
            ],
            [
                -1.955858,
                51.547347
            ],
            [
                -1.955855,
                51.547347
            ],
            [
                -1.967557,
                51.546031
            ],
            [
                -1.966618,
                51.546223
            ],
            [
                -1.965334,
                51.546447
            ],
            [
                -1.964974,
                51.54651
            ],
            [
                -1.964974,
                51.54651
            ],
            [
                -1.964923,
                51.546519
            ],
            [
                -1.964772,
                51.546546
            ],
            [
                -1.96356,
                51.546725
            ],
            [
                -1.962911,
                51.546815
            ],
            [
                -1.962248,
                51.546887
            ],
            [
                -1.960993,
                51.54703
            ],
            [
                -1.960445,
                51.547075
            ],
            [
                -1.960073,
                51.547106
            ],
            [
                -1.955855,
                51.547347
            ],
            [
                -1.955267,
                51.547361
            ],
            [
                -1.953941,
                51.547377
            ],
            [
                -1.951648,
                51.547405
            ],
            [
                -1.950912,
                51.547431
            ],
            [
                -1.949859,
                51.547476
            ],
            [
                -1.947941,
                51.547583
            ],
            [
                -1.947321,
                51.547636
            ],
            [
                -1.947061,
                51.547661
            ]
        ]
    ]
}
View road section coordinates 
[
    [
        [
            -1.960073,
            51.547106
        ],
        [
            -1.9587,
            51.547218
        ],
        [
            -1.958123,
            51.547254
        ],
        [
            -1.957748,
            51.547281
        ],
        [
            -1.956594,
            51.547326
        ],
        [
            -1.955891,
            51.547345
        ],
        [
            -1.955858,
            51.547347
        ],
        [
            -1.955855,
            51.547347
        ],
        [
            -1.967557,
            51.546031
        ],
        [
            -1.966618,
            51.546223
        ],
        [
            -1.965334,
            51.546447
        ],
        [
            -1.964974,
            51.54651
        ],
        [
            -1.964974,
            51.54651
        ],
        [
            -1.964923,
            51.546519
        ],
        [
            -1.964772,
            51.546546
        ],
        [
            -1.96356,
            51.546725
        ],
        [
            -1.962911,
            51.546815
        ],
        [
            -1.962248,
            51.546887
        ],
        [
            -1.960993,
            51.54703
        ],
        [
            -1.960445,
            51.547075
        ],
        [
            -1.960073,
            51.547106
        ],
        [
            -1.955855,
            51.547347
        ],
        [
            -1.955267,
            51.547361
        ],
        [
            -1.953941,
            51.547377
        ],
        [
            -1.951648,
            51.547405
        ],
        [
            -1.950912,
            51.547431
        ],
        [
            -1.949859,
            51.547476
        ],
        [
            -1.947941,
            51.547583
        ],
        [
            -1.947321,
            51.547636
        ],
        [
            -1.947061,
            51.547661
        ]
    ]
]
Cause type
Road Maintenance
Detailed cause
Maintenance Work
Compliance
Mandatory
Probability
Probable
Validity status
Planned
Road management
Other
Feed provider
National Highways
Data source
Roadworks
Feed version
1
Record created
Mon, Aug 10, 2026 1:39 PM
Record versioned
Tue, Aug 11, 2026 3:46 AM
Coordinate source
Geometry

Driving on the M4? See every live closure, roadwork and planned restriction on this road.

M4 live closures

Related incidents

Lane closure

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M4 eastbound Jct 18 to 17 - single lane running (166/1 to 161/7)

Planned Roadworks National Highways
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Starts in 14 hours 35 minutes

Starts 11 Aug 2026, 19:00 Expected clear 12 Aug 2026, 05:00

M4 eastbound Jct 18 to 17 - single lane running (166/1 to 161/7)

Category: Road Maintenance
View update