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 7:00 PM
- Expected end
- Tue, Aug 18, 2026 5:00 AM
- Duration
- 1 hour 2 seconds
- 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
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Flood risk assessment
Planning history
EPC ratings & more
- First published
- Sat, Aug 15, 2026 4:38 AM
- Last updated
- Mon, Aug 17, 2026 7:31 PM
- Cleared
- Mon, Aug 17, 2026 8:00 PM
- 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
- Planned
- Overall feed start
- Mon, Aug 17, 2026 7:00 PM
- Overall feed end
- Tue, Aug 18, 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
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
{
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View road section coordinates
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- 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
- 3
- Record created
- Sat, Aug 15, 2026 4:38 AM
- Record versioned
- Mon, Aug 17, 2026 7:31 PM
- 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 16 hours 58 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 1 hour 36 minutes ago
Started 17 Aug 2026, 19:28
Ended 18 Aug 2026, 00:25
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 7 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 2 hours 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 3 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