M4 Eastbound Jct 4 Fast link to Stockley road Full closure

Cleared

Start time: Tue, Mar 24, 2026 10:00 PM
Expected end: Wed, Mar 25, 2026 5:30 AM
Duration: 7 hours 30 minutes
Road: M4 – Connector At A408/M4 J4/M4 Spur (Heathrow)
Category: Road Maintenance
Direction: Westbound
Carriageway: Dual Carriageway
Reason: Other

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: Tue, Mar 24, 2026 2:07 PM
Last updated: Wed, Mar 25, 2026 3:51 AM
Cleared: Wed, Mar 25, 2026 5:30 AM

Latest update: M4 Eastbound Jct 4 Fast link to Stockley road Full closure

Coordinates: 51.496615, -0.453894
Latitude span: 51.496100 – 51.497312
Longitude span: -0.455621 – -0.453154
Bounding box centre: 51.496706, -0.454388
Location descriptions: connector at A408/M4 J4/M4 spur (Heathrow)

M4 fast slip from M4 J4 eastbound exit to A408 northbound

M4 J4 eastbound exit

Feed validity status: Planned
Overall feed start: Tue, Mar 24, 2026 10:00 PM
Overall feed end: Wed, Mar 25, 2026 5:30 AM
Feed window length: 7 hours 30 minutes
Probability code (raw): probable
Compliance option (raw): mandatory
Source identification (raw): roadworks

Management type value: carriagewayClosures (Carriageway Closures)
Contra-flow flag (raw): false
Width restriction flag (raw): false
Height restriction flag (raw): false
Weight restriction flag (raw): false

Segment 1

4 coordinate pairs

Description: connector at A408/M4 J4/M4 spur (Heathrow)
Lanes Restricted: 1 lane restricted
Operational Lanes: 0 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: {7976A832-2B6A-47D6-B166-3FBE5B13D223}
Linear Element Type: B Carriageway Exit Slip
From Distance: 0 m
To Distance: 25 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.497099 -0.453154
51.497153 -0.453183
51.497253 -0.453237
51.497312 -0.453282

Segment 2

10 coordinate pairs

Description: M4 fast slip from M4 J4 eastbound exit to A408 northbound
Lanes Restricted: 3 lanes restricted
Operational Lanes: 0 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: {20957984-2C2A-4A26-BFF1-20DEBE432726}
Linear Element Type: B Carriageway Exit Slip
From Distance: 0 m
To Distance: 137 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.496123 -0.45486
51.49613 -0.45473
51.496155 -0.454556
51.496207 -0.454382
51.496259 -0.454236
51.496346 -0.454045
51.496407 -0.453928
51.496618 -0.453546
51.496715 -0.453414
51.496822 -0.453295

Segment 3

2 coordinate pairs

Description: M4 J4 eastbound exit
Lanes Restricted: 4 lanes restricted
Operational Lanes: 0 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: {DBD0FCC3-C6F7-4751-967E-6F69CEAE0724}
Linear Element Type: B Carriageway Exit Slip
From Distance: 91 m
To Distance: 144 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.4961 -0.455621
51.496123 -0.45486

Segment 4

3 coordinate pairs

Description: connector at A408/M4 J4/M4 spur (Heathrow)
Carriageway: Dual Carriageway
Lanes Restricted: 5 lanes restricted
Operational Lanes: 0 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: {BE52C543-ACC7-4C3E-B77A-E31FC6BC0A0F}
Linear Element Type: B Carriageway
From Distance: 0 m
To Distance: 32 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.496822 -0.453295
51.496949 -0.453208
51.497099 -0.453154

Geometry type: MultiLineString
Geometry points: 19
First coordinate pair: -0.453154, 51.497099
Road section segments: 1
Road section points: 19

View geometry JSON

{
    "type": "MultiLineString",
    "coordinates": [
        [
            [
                -0.453154,
                51.497099
            ],
            [
                -0.453183,
                51.497153
            ],
            [
                -0.453237,
                51.497253
            ],
            [
                -0.453282,
                51.497312
            ],
            [
                -0.45486,
                51.496123
            ],
            [
                -0.45473,
                51.49613
            ],
            [
                -0.454556,
                51.496155
            ],
            [
                -0.454382,
                51.496207
            ],
            [
                -0.454236,
                51.496259
            ],
            [
                -0.454045,
                51.496346
            ],
            [
                -0.453928,
                51.496407
            ],
            [
                -0.453546,
                51.496618
            ],
            [
                -0.453414,
                51.496715
            ],
            [
                -0.453295,
                51.496822
            ],
            [
                -0.455621,
                51.4961
            ],
            [
                -0.45486,
                51.496123
            ],
            [
                -0.453295,
                51.496822
            ],
            [
                -0.453208,
                51.496949
            ],
            [
                -0.453154,
                51.497099
            ]
        ]
    ]
}

View road section coordinates

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