A404M southbound lane 1 closure from 47/0 to M4 RBT then to A308M northbound 46/0
ClearedA404M southbound lane 1 closure from 47/0 to M4 RBT then to A308M northbound 46/0
- Start time
- Mon, Aug 17, 2026 7:28 PM
- Expected end
- Tue, Aug 18, 2026 5:00 AM
- Duration
- 4 hours 57 minutes 1 second
- Road
- A404(M) – A404(M) Southbound Between J9B And J9A
- Category
- Road Maintenance
- Direction
- Southbound
- Carriageway
- Dual Carriageway
- Lanes affected
- Lane 1 closed, 1 of 2 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
- First published
- Mon, Aug 17, 2026 7:28 PM
- Last updated
- Tue, Aug 18, 2026 12:00 AM
- Cleared
- Tue, Aug 18, 2026 12:25 AM
- Latest update: A404M southbound lane 1 closure from 47/0 to M4 RBT then to A308M northbound 46/0
- Coordinates
- 51.504434, -0.729639
- Latitude span
- 51.499921 – 51.510126
- Longitude span
- -0.744783 – -0.716851
- Bounding box centre
- 51.505024, -0.730817
- Location descriptions
-
- A404(M) southbound between J9B and J9A
- A308(M) eastbound between M4/A404(M) and A308
- A404(M) southbound within J9A
- A404(M) southbound between J9A and J9
- Feed validity status
- Active
- Overall feed start
- Mon, Aug 17, 2026 7:28 PM
- Overall feed end
- Tue, Aug 18, 2026 5:00 AM
- Feed window length
- 9 hours 32 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
2 coordinate pairs- Description
- A404(M) southbound between J9B and J9A
- Carriageway
- Dual Carriageway
- Lane Usage
- Cl1
- Lane Number
- 1
- Lane Status
- Closed
- Lane Direction
- Aligned
- Lanes Restricted
- 1 lane restricted
- Operational Lanes
- 2 operational lanes
- Direction On Section
- South Bound
- Direction Relative
- Aligned
- Height Grade
- Start1 End1
- Linear Element Road
- A404(M)
- Linear Element Model
- The Network Model
- Linear Element Id
- {6BC90F08-040C-40E1-9A38-0B579EB75249}
- Linear Element Type
- B Carriageway
- From Distance
- 0 m
- To Distance
- 27 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
51.507447 -0.735839 51.507293 -0.735525
Segment 2
17 coordinate pairs- Description
- A308(M) eastbound between M4/A404(M) and A308
- Carriageway
- Dual Carriageway
- Lane Usage
- Cl1
- Lane Number
- 1
- Lane Status
- Closed
- Lane Direction
- Aligned
- Lanes Restricted
- 1 lane restricted
- Operational Lanes
- 2 operational lanes
- Direction On Section
- East Bound
- Direction Relative
- Aligned
- Height Grade
- Start1 End1
- Linear Element Road
- A308(M)
- Linear Element Model
- The Network Model
- Linear Element Id
- {7FABDDDA-7318-4A4B-8881-AE36A1E48EBA}
- Linear Element Type
- B Carriageway
- From Distance
- 12 m
- To Distance
- 680 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
51.500032 -0.723995 51.500121 -0.723877 51.500195 -0.723769 51.501203 -0.722992 51.501556 -0.722645 51.501874 -0.722278 51.502122 -0.721925 51.502308 -0.721623 51.502564 -0.721127 51.502798 -0.720534 51.502938 -0.720144 51.502947 -0.720101 51.502975 -0.719992 51.50308 -0.719631 51.503198 -0.719112 51.503234 -0.71881 51.503541 -0.716851
Segment 3
4 coordinate pairs- Description
- A404(M) southbound within J9A
- Carriageway
- Dual Carriageway
- Lane Usage
- Cl1
- Lane Number
- 1
- Lane Status
- Closed
- Lane Direction
- Aligned
- Lanes Restricted
- 1 lane restricted
- Operational Lanes
- 2 operational lanes
- Direction On Section
- South Bound
- Direction Relative
- Aligned
- Height Grade
- Start1 End1
- Linear Element Road
- A404(M)
- Linear Element Model
- The Network Model
- Linear Element Id
- {F1BF7CA7-BBF4-4D74-8164-D23CF17860E2}
- Linear Element Type
- B Carriageway
- From Distance
- 0 m
- To Distance
- 297 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
51.507293 -0.735525 51.506684 -0.734275 51.506279 -0.733436 51.505667 -0.732125
Segment 4
17 coordinate pairs- Description
- A404(M) southbound between J9B and J9A
- Carriageway
- Dual Carriageway
- Lane Usage
- Cl1
- Lane Number
- 1
- Lane Status
- Closed
- Lane Direction
- Aligned
- Lanes Restricted
- 1 lane restricted
- Operational Lanes
- 2 operational lanes
- Direction On Section
- South Bound
- Direction Relative
- Aligned
- Height Grade
- Start2 End1
- Linear Element Road
- A404(M)
- Linear Element Model
- The Network Model
- Linear Element Id
- {9A36C08E-929F-4C16-83C3-50ECB9AD45A0}
- Linear Element Type
- B Carriageway
- From Distance
- 1,368 m
- To Distance
- 2,059 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
51.510126 -0.744783 51.510029 -0.744341 51.509907 -0.743811 51.509642 -0.742579 51.509472 -0.741849 51.509313 -0.741234 51.509125 -0.740562 51.509088 -0.740404 51.509022 -0.740176 51.508957 -0.739933 51.508743 -0.739261 51.508585 -0.73879 51.508418 -0.738305 51.507973 -0.737092 51.507807 -0.736665 51.507622 -0.736237 51.507447 -0.735839
Segment 5
26 coordinate pairs- Description
- A404(M) southbound between J9A and J9
- Carriageway
- Dual Carriageway
- Lane Usage
- Cl1
- Lane Number
- 1
- Lane Status
- Closed
- Lane Direction
- Aligned
- Lanes Restricted
- 1 lane restricted
- Operational Lanes
- 2 operational lanes
- Direction On Section
- South Bound
- Direction Relative
- Aligned
- Height Grade
- Start1 End1
- Linear Element Road
- A404(M)
- Linear Element Model
- The Network Model
- Linear Element Id
- {259A2ACE-3FD6-41C1-9AAC-1860358109D6}
- Linear Element Type
- B Carriageway
- From Distance
- 0 m
- To Distance
- 848 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
51.505667 -0.732125 51.505009 -0.730734 51.504734 -0.730194 51.504583 -0.729881 51.504412 -0.729526 51.504219 -0.729142 51.503916 -0.728589 51.503797 -0.72839 51.503385 -0.727753 51.503367 -0.727725 51.503197 -0.727496 51.503033 -0.727286 51.502932 -0.727161 51.502646 -0.726855 51.502377 -0.726578 51.502055 -0.726299 51.501688 -0.726024 51.501578 -0.725941 51.50079 -0.725488 51.500341 -0.725259 51.500202 -0.72518 51.500088 -0.725077 51.500067 -0.72505 51.500024 -0.724972 51.499986 -0.72487 51.499921 -0.724615
- Geometry type
- MultiLineString
- Geometry points
- 66
- First coordinate pair
- -0.735839, 51.507447
- Road section segments
- 1
- Road section points
- 66
View geometry JSON
{
"type": "MultiLineString",
"coordinates": [
[
[
-0.735839,
51.507447
],
[
-0.735525,
51.507293
],
[
-0.723995,
51.500032
],
[
-0.723877,
51.500121
],
[
-0.723769,
51.500195
],
[
-0.722992,
51.501203
],
[
-0.722645,
51.501556
],
[
-0.722278,
51.501874
],
[
-0.721925,
51.502122
],
[
-0.721623,
51.502308
],
[
-0.721127,
51.502564
],
[
-0.720534,
51.502798
],
[
-0.720144,
51.502938
],
[
-0.720101,
51.502947
],
[
-0.719992,
51.502975
],
[
-0.719631,
51.50308
],
[
-0.719112,
51.503198
],
[
-0.71881,
51.503234
],
[
-0.716851,
51.503541
],
[
-0.735525,
51.507293
],
[
-0.734275,
51.506684
],
[
-0.733436,
51.506279
],
[
-0.732125,
51.505667
],
[
-0.744783,
51.510126
],
[
-0.744341,
51.510029
],
[
-0.743811,
51.509907
],
[
-0.742579,
51.509642
],
[
-0.741849,
51.509472
],
[
-0.741234,
51.509313
],
[
-0.740562,
51.509125
],
[
-0.740404,
51.509088
],
[
-0.740176,
51.509022
],
[
-0.739933,
51.508957
],
[
-0.739261,
51.508743
],
[
-0.73879,
51.508585
],
[
-0.738305,
51.508418
],
[
-0.737092,
51.507973
],
[
-0.736665,
51.507807
],
[
-0.736237,
51.507622
],
[
-0.735839,
51.507447
],
[
-0.732125,
51.505667
],
[
-0.730734,
51.505009
],
[
-0.730194,
51.504734
],
[
-0.729881,
51.504583
],
[
-0.729526,
51.504412
],
[
-0.729142,
51.504219
],
[
-0.728589,
51.503916
],
[
-0.72839,
51.503797
],
[
-0.727753,
51.503385
],
[
-0.727725,
51.503367
],
[
-0.727496,
51.503197
],
[
-0.727286,
51.503033
],
[
-0.727161,
51.502932
],
[
-0.726855,
51.502646
],
[
-0.726578,
51.502377
],
[
-0.726299,
51.502055
],
[
-0.726024,
51.501688
],
[
-0.725941,
51.501578
],
[
-0.725488,
51.50079
],
[
-0.725259,
51.500341
],
[
-0.72518,
51.500202
],
[
-0.725077,
51.500088
],
[
-0.72505,
51.500067
],
[
-0.724972,
51.500024
],
[
-0.72487,
51.499986
],
[
-0.724615,
51.499921
]
]
]
}
View road section coordinates
[
[
[
-0.735839,
51.507447
],
[
-0.735525,
51.507293
],
[
-0.723995,
51.500032
],
[
-0.723877,
51.500121
],
[
-0.723769,
51.500195
],
[
-0.722992,
51.501203
],
[
-0.722645,
51.501556
],
[
-0.722278,
51.501874
],
[
-0.721925,
51.502122
],
[
-0.721623,
51.502308
],
[
-0.721127,
51.502564
],
[
-0.720534,
51.502798
],
[
-0.720144,
51.502938
],
[
-0.720101,
51.502947
],
[
-0.719992,
51.502975
],
[
-0.719631,
51.50308
],
[
-0.719112,
51.503198
],
[
-0.71881,
51.503234
],
[
-0.716851,
51.503541
],
[
-0.735525,
51.507293
],
[
-0.734275,
51.506684
],
[
-0.733436,
51.506279
],
[
-0.732125,
51.505667
],
[
-0.744783,
51.510126
],
[
-0.744341,
51.510029
],
[
-0.743811,
51.509907
],
[
-0.742579,
51.509642
],
[
-0.741849,
51.509472
],
[
-0.741234,
51.509313
],
[
-0.740562,
51.509125
],
[
-0.740404,
51.509088
],
[
-0.740176,
51.509022
],
[
-0.739933,
51.508957
],
[
-0.739261,
51.508743
],
[
-0.73879,
51.508585
],
[
-0.738305,
51.508418
],
[
-0.737092,
51.507973
],
[
-0.736665,
51.507807
],
[
-0.736237,
51.507622
],
[
-0.735839,
51.507447
],
[
-0.732125,
51.505667
],
[
-0.730734,
51.505009
],
[
-0.730194,
51.504734
],
[
-0.729881,
51.504583
],
[
-0.729526,
51.504412
],
[
-0.729142,
51.504219
],
[
-0.728589,
51.503916
],
[
-0.72839,
51.503797
],
[
-0.727753,
51.503385
],
[
-0.727725,
51.503367
],
[
-0.727496,
51.503197
],
[
-0.727286,
51.503033
],
[
-0.727161,
51.502932
],
[
-0.726855,
51.502646
],
[
-0.726578,
51.502377
],
[
-0.726299,
51.502055
],
[
-0.726024,
51.501688
],
[
-0.725941,
51.501578
],
[
-0.725488,
51.50079
],
[
-0.725259,
51.500341
],
[
-0.72518,
51.500202
],
[
-0.725077,
51.500088
],
[
-0.72505,
51.500067
],
[
-0.724972,
51.500024
],
[
-0.72487,
51.499986
],
[
-0.724615,
51.499921
]
]
]
- 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
- 3
- Record created
- Mon, Aug 17, 2026 7:28 PM
- Record versioned
- Tue, Aug 18, 2026 12:00 AM
- Coordinate source
- Geometry
Driving on the A404(M)? See every live closure, roadwork and planned restriction on this road.
A404(M) live closuresRelated incidents
A404M southbound lane 1 closure from 47/0 to M4 RBT then to A308M northbound 46/0
Planned Roadworks National Highways
Windsor And Maidenhead
A404(M) · A404(M) Southbound Between J9B And J9A
Starts in 17 hours 47 minutes
Starts 18 Aug 2026, 19:00
Expected clear 19 Aug 2026, 05:00
A404M southbound lane 1 closure from 47/0 to M4 RBT then to A308M northbound 46/0
Category: Road Maintenance
View update
A404M southbound lane 1 closure from 47/0 to M4 RBT then to A308M northbound 46/0
Cleared Roadworks National Highways
Windsor And Maidenhead
A404(M) · A404(M) Southbound Between J9B And J9A
Cleared 5 hours 12 minutes ago
Started 17 Aug 2026, 19:00
Ended 17 Aug 2026, 20:00
A404M southbound lane 1 closure from 47/0 to M4 RBT then to A308M northbound 46/0
Category: Road Maintenance
View update
A404M southbound lane 2 closure (46/8 to M4 RBT)
Cleared Roadworks National Highways
Windsor And Maidenhead
A404(M) · A404(M) Southbound Between J9A And J9
Cleared 3 days 6 hours ago
Started 14 Aug 2026, 19:00
Ended 14 Aug 2026, 19:00
A404M southbound lane 2 closure (46/8 to M4 RBT)
Category: Road Maintenance
View update
A404M southbound lane 2 closure (46/8 to M4 RBT)
Cleared Roadworks National Highways
Windsor And Maidenhead
A404(M) · A404(M) Southbound Between J9A And J9
Cleared 2 days 21 hours ago
Started 14 Aug 2026, 18:28
Ended 15 Aug 2026, 04:05
A404M southbound lane 2 closure (46/8 to M4 RBT)
Category: Road Maintenance
View update
M4 Jct 8/9 Roundabout partial closure
Cleared Roadworks National Highways
Windsor And Maidenhead
M4 · Roundabout At M4 J8/A404(M) J9/A308(M)
Cleared 5 days 1 hour ago
Started 12 Aug 2026, 21:54
Ended 12 Aug 2026, 23:15
M4 Jct 8/9 Roundabout partial closure
Category: Road Maintenance
View update
M4 Jct 8/9 Roundabout partial closure
Cleared Roadworks National Highways
Windsor And Maidenhead
M4 · Roundabout At M4 J8/A404(M) J9/A308(M)
Cleared 5 days 2 hours ago
Started 12 Aug 2026, 20:00
Ended 12 Aug 2026, 22:25
M4 Jct 8/9 Roundabout partial closure
Category: Road Maintenance
View update