Crash View

A404M northbound Bisham to Marlow carriageway closure

Cleared

A404M northbound Bisham to Marlow carriageway closure

Start time
Wed, Jan 14, 2026 8:42 PM
Expected end
Thu, Jan 15, 2026 6:00 AM
Duration
9 hours 18 minutes
Road
A404 – A404 Northbound Between A308 And A4155
Category
Road Maintenance
Direction
Northbound
Carriageway
Dual Carriageway
Reason
Tree And Vegetation Cutting Work
Live incident
Active roadworks
Planned
Cleared
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First published
Wed, Jan 14, 2026 8:42 PM
Last updated
Wed, Jan 14, 2026 11:21 PM
Cleared
Thu, Jan 15, 2026 6:00 AM
  • Latest update: A404M northbound Bisham to Marlow carriageway closure
Coordinates
51.569886, -0.761892
Latitude span
51.555072 – 51.587783
Longitude span
-0.774141 – -0.756302
Bounding box centre
51.571428, -0.765222
Location descriptions
  • A404 northbound between A308 and A4155
  • A404 northbound within the A4155 junction
  • A404 northbound between A4155 and M40
Feed validity status
Active
Overall feed start
Wed, Jan 14, 2026 8:42 PM
Overall feed end
Thu, Jan 15, 2026 6:00 AM
Feed window length
9 hours 18 minutes
Probability code (raw)
certain
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

24 coordinate pairs
Description
A404 northbound between A308 and A4155
Carriageway
Dual Carriageway
Lanes Restricted
2 lanes restricted
Operational Lanes
0 operational lanes
Direction On Section
North Bound
Direction Relative
Aligned
Height Grade
Start1 End2
Linear Element Road
A404
Linear Element Model
The Network Model
Linear Element Id
{53907D8E-092A-45C5-85CA-0C42681C39D1}
Linear Element Type
A Carriageway
From Distance
4 m
To Distance
1,286 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.555072 -0.774141
51.555115 -0.773986
51.555191 -0.773806
51.555298 -0.773637
51.555491 -0.773355
51.555991 -0.772632
51.556024 -0.772585
51.55639 -0.772048
51.556945 -0.771238
51.557449 -0.770506
51.559155 -0.767985
51.559449 -0.767547
51.559619 -0.767308
51.55977 -0.767111
51.560106 -0.766689
51.560456 -0.766279
51.561142 -0.765545
51.5616 -0.765108
51.561794 -0.764942
51.561933 -0.764828
51.562317 -0.764512
51.56255 -0.764341
51.563141 -0.763947
51.564224 -0.763246

Segment 2

17 coordinate pairs
Description
A404 northbound between A308 and A4155
Carriageway
Dual Carriageway
Lanes Restricted
2 lanes restricted
Operational Lanes
0 operational lanes
Direction On Section
North Bound
Direction Relative
Aligned
Height Grade
Start2 End1
Linear Element Road
A404
Linear Element Model
The Network Model
Linear Element Id
{865BF03F-BBB1-44C5-9165-D97520DF022F}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
866 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.570532 -0.759196
51.570836 -0.759009
51.571224 -0.758763
51.571971 -0.758281
51.572778 -0.757769
51.573278 -0.757459
51.573719 -0.757207
51.574103 -0.757012
51.574601 -0.756812
51.575287 -0.756584
51.575486 -0.756522
51.575797 -0.756456
51.576429 -0.756349
51.577156 -0.756302
51.57775 -0.756344
51.577965 -0.756352
51.578029 -0.756365

Segment 3

4 coordinate pairs
Description
A404 northbound within the A4155 junction
Carriageway
Dual Carriageway
Lanes Restricted
2 lanes restricted
Operational Lanes
0 operational lanes
Direction On Section
North Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A404
Linear Element Model
The Network Model
Linear Element Id
{59284ABC-DDD5-4C18-816D-6BAFA987463C}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
251 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.581615 -0.757004
51.582151 -0.757106
51.583303 -0.757317
51.583855 -0.757453

Segment 4

8 coordinate pairs
Description
A404 northbound between A308 and A4155
Carriageway
Dual Carriageway
Lanes Restricted
2 lanes restricted
Operational Lanes
0 operational lanes
Direction On Section
North Bound
Direction Relative
Aligned
Height Grade
Start1 End2
Linear Element Road
A404
Linear Element Model
The Network Model
Linear Element Id
{E590B8E5-6B97-4877-939C-B54DB9E17D22}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
500 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.566259 -0.761959
51.566369 -0.761889
51.567362 -0.761259
51.568355 -0.760616
51.568818 -0.760325
51.569336 -0.759993
51.57022 -0.759406
51.570434 -0.759271

Segment 5

2 coordinate pairs
Description
A404 northbound between A308 and A4155
Carriageway
Dual Carriageway
Lanes Restricted
2 lanes restricted
Operational Lanes
0 operational lanes
Direction On Section
North Bound
Direction Relative
Aligned
Height Grade
Start2 End2
Linear Element Road
A404
Linear Element Model
The Network Model
Linear Element Id
{86415CC5-514C-4DBC-9AC9-5D11DAFC73F3}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
12 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.570434 -0.759271
51.570532 -0.759196

Segment 6

2 coordinate pairs
Description
A404 northbound within the A4155 junction
Carriageway
Dual Carriageway
Lanes Restricted
2 lanes restricted
Operational Lanes
0 operational lanes
Direction On Section
North Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A404
Linear Element Model
The Network Model
Linear Element Id
{264B9E8E-F8B2-477A-99FF-F575840A1F9F}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
82 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.580879 -0.756872
51.581615 -0.757004

Segment 7

3 coordinate pairs
Description
A404 northbound within the A4155 junction
Carriageway
Dual Carriageway
Lanes Restricted
2 lanes restricted
Operational Lanes
0 operational lanes
Direction On Section
North Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A404
Linear Element Model
The Network Model
Linear Element Id
{0D3A7735-BB8E-4E13-9028-ACE1FD31D854}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
319 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.578029 -0.756365
51.579253 -0.75657
51.580879 -0.756872

Segment 8

6 coordinate pairs
Description
A404 northbound between A4155 and M40
Carriageway
Dual Carriageway
Lanes Restricted
2 lanes restricted
Operational Lanes
0 operational lanes
Direction On Section
North Bound
Direction Relative
Aligned
Height Grade
Start1 End2
Linear Element Road
A404
Linear Element Model
The Network Model
Linear Element Id
{A9DF9FD6-891D-41DD-906C-46EA6AB977C8}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
439 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.583855 -0.757453
51.585966 -0.757842
51.586673 -0.757971
51.58711 -0.758046
51.587505 -0.75812
51.587783 -0.758168

Segment 9

2 coordinate pairs
Description
A404 northbound between A308 and A4155
Carriageway
Dual Carriageway
Lanes Restricted
2 lanes restricted
Operational Lanes
0 operational lanes
Direction On Section
North Bound
Direction Relative
Aligned
Height Grade
Start2 End1
Linear Element Road
A404
Linear Element Model
The Network Model
Linear Element Id
{5D220EF5-20E5-4A25-BFE5-8FB1EB6E4098}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
243 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.564224 -0.763246
51.566259 -0.761959
Geometry type
MultiLineString
Geometry points
68
First coordinate pair
-0.774141, 51.555072
Road section segments
1
Road section points
68
View geometry JSON 
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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
Tree And Vegetation Cutting Work
Compliance
Mandatory
Probability
Certain
Validity status
Active
Road management
Carriageway Closures
Feed provider
National Highways
Data source
Roadworks
Feed version
1
Record created
Wed, Jan 14, 2026 8:42 PM
Record versioned
Wed, Jan 14, 2026 11:21 PM
Coordinate source
Geometry

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

A404 live closures

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