M4 westbound Jct 17 exit and entry slip roads lane closures

Planned

Start time: Mon, Aug 24, 2026 7:00 PM
Expected end: Tue, Aug 25, 2026 5:00 AM
Duration: 10 hours
Road: M4 – M4 J17 Westbound Exit
Category: Road Maintenance
Direction: Westbound
Carriageway: Dual Carriageway
Lanes affected: Lane 2 closed, 1 of 2 lanes affected, 1 of 3 lanes affected
Reason: Maintenance Work

Live incident

Active roadworks

Planned

Cleared

Hover or tap markers for full details

Move Insights

Thinking of moving to this area?

Check flood risk, planning history, EPC ratings and more with a Move Insights property report.

Flood risk assessment

Planning history

EPC ratings & more

Get a property report

First published: Sat, Aug 22, 2026 2:12 AM
Last updated: Mon, Aug 24, 2026 12:23 AM
Cleared: Tue, Aug 25, 2026 5:00 AM

Latest update: M4 westbound Jct 17 exit and entry slip roads lane closures

Coordinates: 51.514711, -2.117815
Latitude span: 51.514314 – 51.515043
Longitude span: -2.120641 – -2.112176
Bounding box centre: 51.514679, -2.116409
Location descriptions: M4 J17 westbound exit

M4 westbound between J16 and J17

Feed validity status: Planned
Overall feed start: Mon, Aug 24, 2026 7:00 PM
Overall feed end: Tue, Aug 25, 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

17 coordinate pairs

Description: M4 J17 westbound exit
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: {69BA64A8-4C35-4A4E-825E-5D71229AB74F}
Linear Element Type: A Carriageway Exit Slip
From Distance: 0 m
To Distance: 472 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.515043 -2.114009
51.514928 -2.116061
51.514888 -2.116675
51.514873 -2.116911
51.514841 -2.117344
51.514805 -2.117683
51.514789 -2.11783
51.514731 -2.118372
51.514645 -2.119044
51.514515 -2.120153
51.514502 -2.120237
51.514494 -2.120276
51.514486 -2.120316
51.514467 -2.120382
51.514428 -2.120468
51.514366 -2.12058
51.514314 -2.120641

Segment 2

3 coordinate pairs

Description: M4 westbound between J16 and J17
Carriageway: Dual Carriageway
Lane Usage: Cl2
Lane Number: 2
Lane Status: Closed
Lane Direction: Aligned
Lanes Restricted: 1 lane restricted
Operational Lanes: 3 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: {1A07014C-3FA5-435F-A6BF-2CE9F881307C}
Linear Element Type: A Carriageway
From Distance: 1,051 m
To Distance: 1,179 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.515023 -2.112176
51.515032 -2.113132
51.515043 -2.114009

Geometry type: MultiLineString
Geometry points: 20
First coordinate pair: -2.114009, 51.515043
Road section segments: 1
Road section points: 20

View geometry JSON

{
    "type": "MultiLineString",
    "coordinates": [
        [
            [
                -2.114009,
                51.515043
            ],
            [
                -2.116061,
                51.514928
            ],
            [
                -2.116675,
                51.514888
            ],
            [
                -2.116911,
                51.514873
            ],
            [
                -2.117344,
                51.514841
            ],
            [
                -2.117683,
                51.514805
            ],
            [
                -2.11783,
                51.514789
            ],
            [
                -2.118372,
                51.514731
            ],
            [
                -2.119044,
                51.514645
            ],
            [
                -2.120153,
                51.514515
            ],
            [
                -2.120237,
                51.514502
            ],
            [
                -2.120276,
                51.514494
            ],
            [
                -2.120316,
                51.514486
            ],
            [
                -2.120382,
                51.514467
            ],
            [
                -2.120468,
                51.514428
            ],
            [
                -2.12058,
                51.514366
            ],
            [
                -2.120641,
                51.514314
            ],
            [
                -2.112176,
                51.515023
            ],
            [
                -2.113132,
                51.515032
            ],
            [
                -2.114009,
                51.515043
            ]
        ]
    ]
}

View road section coordinates

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