Crash View

A404 southbound lane 2 closure (53/4 to 47/1)

Cleared

A404 southbound lane 2 closure (53/4 to 47/1)

Start time
Tue, Oct 28, 2025 9:54 PM
Expected end
Wed, Oct 29, 2025 6:00 AM
Duration
8 hours 6 minutes
Road
A404(M) – A404(M) Southbound Within J9B
Category
Road Maintenance
Direction
Southbound
Carriageway
Dual Carriageway
Lanes affected
Lane 2 closed, 1 of 2 lanes affected, 1 of 1 lanes affected
Reason
Maintenance Work
Live incident
Active roadworks
Planned
Cleared
Hover or tap markers for full details

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First published
Tue, Oct 28, 2025 9:54 PM
Last updated
Wed, Oct 29, 2025 1:59 AM
Cleared
Wed, Oct 29, 2025 6:00 AM
  • Latest update: A404 southbound lane 2 closure (53/4 to 47/1)
Coordinates
51.528006, -0.774341
Latitude span
51.510321 – 51.551032
Longitude span
-0.787704 – -0.745678
Bounding box centre
51.530677, -0.766691
Location descriptions
  • A404(M) southbound within J9B
  • A404 southbound between A308 and A4130
  • A404(M) southbound between J9B and J9A
  • A404 southbound within the A4130 junction
  • A404 southbound between A4130 and A404(M)/A4
Feed validity status
Active
Overall feed start
Tue, Oct 28, 2025 9:54 PM
Overall feed end
Wed, Oct 29, 2025 6:00 AM
Feed window length
8 hours 6 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

9 coordinate pairs
Description
A404(M) southbound within J9B
Carriageway
Dual Carriageway
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
South Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A404(M)
Linear Element Model
The Network Model
Linear Element Id
{DECFCE15-856A-4B91-A55C-406F1CE316B3}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
271 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.521232 -0.76633
51.52105 -0.766119
51.520932 -0.765992
51.520642 -0.76574
51.520324 -0.765461
51.520133 -0.765293
51.519653 -0.764946
51.519077 -0.764552
51.519064 -0.764544

Segment 2

5 coordinate pairs
Description
A404 southbound between A308 and A4130
Carriageway
Dual Carriageway
Lane Usage
Cl2
Lane Number
2
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
1 lane restricted
Operational Lanes
1 operational lane
Direction On Section
South Bound
Direction Relative
Aligned
Height Grade
Start2 End1
Linear Element Road
A404
Linear Element Model
The Network Model
Linear Element Id
{1FFCCBAB-CC46-44CB-98C1-C5D46BFD2B6E}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
105 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.540809 -0.78769
51.540721 -0.787701
51.540399 -0.787704
51.540126 -0.787694
51.539861 -0.78768

Segment 3

4 coordinate pairs
Description
A404(M) southbound between J9B and J9A
Carriageway
Dual Carriageway
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
South Bound
Direction Relative
Aligned
Height Grade
Start1 End2
Linear Element Road
A404(M)
Linear Element Model
The Network Model
Linear Element Id
{C1771B23-5BCE-4ACD-8D16-51BD5A85395A}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
88 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.51632 -0.762616
51.515984 -0.762321
51.515666 -0.761998
51.515638 -0.76197

Segment 4

11 coordinate pairs
Description
A404 southbound within the A4130 junction
Carriageway
Dual Carriageway
Lane Usage
Cl2
Lane Number
2
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
1 lane restricted
Operational Lanes
1 operational lane
Direction On Section
South Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A404
Linear Element Model
The Network Model
Linear Element Id
{1E627A20-0ECA-4CB2-90FC-7A319A108315}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
361 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.533202 -0.786291
51.533112 -0.786265
51.532453 -0.786037
51.531749 -0.785768
51.531505 -0.785659
51.531324 -0.785563
51.530809 -0.785288
51.530619 -0.785178
51.530591 -0.78515
51.530365 -0.785026
51.530085 -0.784846

Segment 5

29 coordinate pairs
Description
A404 southbound between A308 and A4130
Carriageway
Dual Carriageway
Lane Usage
Cl2
Lane Number
2
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
1 lane restricted
Operational Lanes
1 operational lane
Direction On Section
South Bound
Direction Relative
Aligned
Height Grade
Start1 End2
Linear Element Road
A404
Linear Element Model
The Network Model
Linear Element Id
{AB1659FD-D577-411F-BAA1-4509E68C2E37}
Linear Element Type
B Carriageway
From Distance
427 m
To Distance
1,793 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.551032 -0.777439
51.550959 -0.777501
51.550567 -0.777884
51.550382 -0.778082
51.55007 -0.778425
51.549787 -0.77879
51.549357 -0.779376
51.548941 -0.779974
51.548541 -0.780536
51.548162 -0.781074
51.547728 -0.781696
51.547309 -0.782309
51.546793 -0.783083
51.546414 -0.783593
51.546168 -0.783924
51.545853 -0.784341
51.545449 -0.784799
51.545063 -0.785211
51.544771 -0.785517
51.54433 -0.785937
51.543961 -0.786271
51.543641 -0.786518
51.543152 -0.786859
51.542807 -0.787056
51.542448 -0.787244
51.542056 -0.787394
51.541673 -0.787518
51.541221 -0.787628
51.540809 -0.78769

Segment 6

8 coordinate pairs
Description
A404 southbound within the A4130 junction
Carriageway
Dual Carriageway
Lane Usage
Cl2
Lane Number
2
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
1 lane restricted
Operational Lanes
1 operational lane
Direction On Section
South Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A404
Linear Element Model
The Network Model
Linear Element Id
{9E94DEBA-A409-4C9E-80DC-832635A755BA}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
386 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.536652 -0.786863
51.536255 -0.786801
51.53513 -0.786658
51.534743 -0.786611
51.534112 -0.786512
51.533454 -0.786371
51.533292 -0.786332
51.533202 -0.786291

Segment 7

17 coordinate pairs
Description
A404 southbound between A4130 and A404(M)/A4
Carriageway
Dual Carriageway
Lane Usage
Cl2
Lane Number
2
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
1 lane restricted
Operational Lanes
1 operational lane
Direction On Section
South Bound
Direction Relative
Aligned
Height Grade
Start1 End2
Linear Element Road
A404
Linear Element Model
The Network Model
Linear Element Id
{E316457F-ACB9-40E8-B0F7-2D78C00BA274}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
529 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.527262 -0.782355
51.526989 -0.781992
51.526943 -0.781931
51.526505 -0.781251
51.526257 -0.780811
51.526074 -0.780455
51.525908 -0.780085
51.525677 -0.779543
51.525511 -0.779087
51.52539 -0.778729
51.525297 -0.778415
51.525175 -0.777942
51.525062 -0.777441
51.525034 -0.777312
51.524871 -0.776379
51.524842 -0.776164
51.524813 -0.776006

Segment 8

8 coordinate pairs
Description
A404 southbound between A308 and A4130
Carriageway
Dual Carriageway
Lane Usage
Cl2
Lane Number
2
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
1 lane restricted
Operational Lanes
1 operational lane
Direction On Section
South Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A404
Linear Element Model
The Network Model
Linear Element Id
{2428E7C9-882F-46B0-8727-057A787A5E6A}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
361 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.539861 -0.78768
51.539496 -0.787634
51.539222 -0.787583
51.538628 -0.787403
51.538056 -0.787202
51.537611 -0.787064
51.537093 -0.786933
51.536652 -0.786863

Segment 9

11 coordinate pairs
Description
A404 southbound within the A4130 junction
Carriageway
Dual Carriageway
Lane Usage
Cl2
Lane Number
2
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
1 lane restricted
Operational Lanes
1 operational lane
Direction On Section
South Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A404
Linear Element Model
The Network Model
Linear Element Id
{7798FA4C-F1D7-4779-A91A-3B3F02DA5EC8}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
359 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.530085 -0.784846
51.529985 -0.784781
51.529831 -0.78468
51.529523 -0.784457
51.529143 -0.784179
51.52878 -0.783886
51.528099 -0.783284
51.527918 -0.783116
51.527618 -0.782807
51.52739 -0.782525
51.527262 -0.782355

Segment 10

24 coordinate pairs
Description
A404 southbound between A4130 and A404(M)/A4
Carriageway
Dual Carriageway
Lane Usage
Cl2
Lane Number
2
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
1 lane restricted
Operational Lanes
1 operational lane
Direction On Section
South Bound
Direction Relative
Aligned
Height Grade
Start2 End1
Linear Element Road
A404
Linear Element Model
The Network Model
Linear Element Id
{695B9677-7FB6-490C-BB5D-9F6CE2AAF42D}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
799 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.524813 -0.776006
51.524746 -0.775619
51.524582 -0.774513
51.524448 -0.773753
51.524297 -0.773007
51.524174 -0.772506
51.524071 -0.77212
51.523959 -0.771705
51.523829 -0.77129
51.523634 -0.770704
51.523541 -0.770459
51.523338 -0.76992
51.5232 -0.769592
51.52308 -0.769321
51.522933 -0.769008
51.522813 -0.768766
51.522648 -0.768454
51.522419 -0.768042
51.522328 -0.767886
51.522126 -0.76756
51.521916 -0.767248
51.521615 -0.766824
51.521433 -0.766569
51.521232 -0.76633

Segment 11

5 coordinate pairs
Description
A404(M) southbound within J9B
Carriageway
Dual Carriageway
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
South Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A404(M)
Linear Element Model
The Network Model
Linear Element Id
{AAE6CFBC-861C-4D3F-8240-9818D0B56166}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
261 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.518467 -0.764142
51.518457 -0.764135
51.517335 -0.763394
51.517208 -0.763311
51.51632 -0.762616

Segment 12

2 coordinate pairs
Description
A404(M) southbound within J9B
Carriageway
Dual Carriageway
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
South Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A404(M)
Linear Element Model
The Network Model
Linear Element Id
{D4596AD0-E655-41E5-A3F3-D246E662C9BE}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
72 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.519064 -0.764544
51.518467 -0.764142

Segment 13

28 coordinate pairs
Description
A404(M) southbound between J9B and J9A
Carriageway
Dual Carriageway
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
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
0 m
To Distance
1,302 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.515638 -0.76197
51.515092 -0.761322
51.514928 -0.761111
51.514526 -0.760559
51.514398 -0.760347
51.514114 -0.75985
51.513812 -0.759296
51.513729 -0.759126
51.513553 -0.758741
51.513526 -0.758684
51.513241 -0.758
51.51312 -0.757701
51.512944 -0.757187
51.512804 -0.75673
51.512618 -0.756072
51.512467 -0.755442
51.512344 -0.754883
51.512316 -0.754726
51.512155 -0.753981
51.512038 -0.753451
51.511815 -0.752434
51.511564 -0.751302
51.510993 -0.748724
51.510946 -0.748509
51.510776 -0.747721
51.510625 -0.747063
51.510407 -0.746074
51.510321 -0.745678
Geometry type
MultiLineString
Geometry points
161
First coordinate pair
-0.766330, 51.521232
Road section segments
1
Road section points
161
View geometry JSON 
{
    "type": "MultiLineString",
    "coordinates": [
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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View road section coordinates 
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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
1
Record created
Tue, Oct 28, 2025 9:54 PM
Record versioned
Wed, Oct 29, 2025 1:59 AM
Coordinate source
Geometry

Driving on the A404(M)? See every live closure, roadwork and planned restriction on this road.

A404(M) live closures

Related incidents

A404 northbound lane 2 closure (53/0 to 54/9)

Cleared Roadworks National Highways
Windsor And Maidenhead A404 · Roundabout At A404/A308

Cleared 3 days 10 hours ago

Started 10 Jun 2026, 19:00 Ended 10 Jun 2026, 19:00

A404 northbound lane 2 closure (53/0 to 54/9)

Category: Road Maintenance
View update

A404 southbound lane 2 closure (55/2 to 53/9)

Cleared Roadworks National Highways
Windsor And Maidenhead A404 · A404 Southbound Between A4155 And A308

Cleared 3 days 10 hours ago

Started 10 Jun 2026, 19:00 Ended 10 Jun 2026, 19:00

A404 southbound lane 2 closure (55/2 to 53/9)

Category: Road Maintenance
View update

A404 southbound lane 2 closure (55/2 to 53/9)

Cleared Roadworks National Highways
Windsor And Maidenhead A404 · A404 Southbound Between A4155 And A308

Cleared 3 days 7 hours ago

Started 10 Jun 2026, 18:30 Ended 10 Jun 2026, 21:40

A404 southbound lane 2 closure (55/2 to 53/9)

Category: Road Maintenance
View update

A404M southbound lane 2 closure (48/7 to 45/1)

Cleared Roadworks National Highways
Windsor And Maidenhead A404(M) · A404(M) Southbound Between J9B And J9A

Cleared 4 days 9 minutes ago

Started 9 Jun 2026, 19:00 Ended 10 Jun 2026, 05:00

A404M southbound lane 2 closure (48/7 to 45/1)

Category: Road Maintenance
View update

A404M southbound lane 2 closure (48/7 to 45/1)

Cleared Roadworks National Highways
Windsor And Maidenhead A404(M) · A404(M) Southbound Between J9B And J9A

Cleared 4 days 9 minutes ago

Started 9 Jun 2026, 18:45 Ended 10 Jun 2026, 05:00

A404M southbound lane 2 closure (48/7 to 45/1)

Category: Road Maintenance
View update

A404M southbound lane 2 closure (48/7 to 45/1)

Cleared Roadworks National Highways
Windsor And Maidenhead A404(M) · A404(M) Southbound Between J9B And J9A

Cleared 5 days 9 minutes ago

Started 8 Jun 2026, 19:00 Ended 9 Jun 2026, 05:00

A404M southbound lane 2 closure (48/7 to 45/1)

Category: Road Maintenance
View update