A40 Anticlockwise Jct Denham roundabout lane closure
PlannedA40 Anticlockwise Jct Denham roundabout lane closure
- Start time
- Thu, Nov 13, 2025 10:00 PM
- Expected end
- Fri, Nov 14, 2025 5:30 AM
- Duration
- 7 hours 30 minutes
- Road
- A40 – Roundabout At M40 J1/A40
- Category
- Road Maintenance
- Direction
- Clockwise
- Carriageway
- Singlecarriageway
- Lanes affected
- Lane 2 closed, 1 of 3 lanes affected, 1 of 2 lanes affected, 1 of 1 lanes affected
- Reason
- Maintenance Work
Active
Planned
Cleared
Hover or tap markers for full details
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- First published
- Thu, Nov 13, 2025 4:14 AM
- Last updated
- Thu, Nov 13, 2025 12:48 PM
- Cleared
- Fri, Nov 14, 2025 5:30 AM
- Latest update: A40 Anticlockwise Jct Denham roundabout lane closure
- Coordinates
- 51.561491, -0.495618
- Latitude span
- 51.559896 – 51.562663
- Longitude span
- -0.497136 – -0.493139
- Bounding box centre
- 51.561280, -0.495138
- Location descriptions
-
- roundabout at M40 J1/A40
- Feed validity status
- Planned
- Overall feed start
- Thu, Nov 13, 2025 10:00 PM
- Overall feed end
- Fri, Nov 14, 2025 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
- other
- Contra-flow flag (raw)
- false
- Width restriction flag (raw)
- false
- Height restriction flag (raw)
- false
- Weight restriction flag (raw)
- false
Segment 1
3 coordinate pairs- Description
- roundabout at M40 J1/A40
- Carriageway
- Single Carriageway
- Lane Usage
- Cl2
- Lane Number
- 2
- Lane Status
- Closed
- Lane Direction
- Aligned
- Lanes Restricted
- 1 lane restricted
- Operational Lanes
- 3 operational lanes
- Direction On Section
- Clockwise
- Direction Relative
- Both
- Height Grade
- Start1 End1
- Linear Element Road
- A40
- Linear Element Model
- The Network Model
- Linear Element Id
- {3DCEE61B-6705-4628-9BBD-2733792473CE}
- Linear Element Type
- Other
- From Distance
- 0 m
- To Distance
- 30 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
51.559896 -0.494939 51.559916 -0.495155 51.559937 -0.49537
Segment 2
8 coordinate pairs- Description
- roundabout at M40 J1/A40
- Carriageway
- Single 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
- Clockwise
- Direction Relative
- Both
- Height Grade
- Start1 End1
- Linear Element Road
- A40
- Linear Element Model
- The Network Model
- Linear Element Id
- {68B66AC6-D822-4607-AEB1-FBDE8D32D136}
- Linear Element Type
- Other
- From Distance
- 0 m
- To Distance
- 99 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
51.562649 -0.496507 51.562648 -0.496377 51.562632 -0.496256 51.562628 -0.496219 51.562608 -0.496104 51.562579 -0.495976 51.562505 -0.495747 51.562288 -0.495219
Segment 3
2 coordinate pairs- Description
- roundabout at M40 J1/A40
- Carriageway
- Dual Carriageway
- Lane Usage
- Cl2
- Lane Number
- 2
- Lane Status
- Closed
- Lane Direction
- Aligned
- Lanes Restricted
- 1 lane restricted
- Operational Lanes
- 0 operational lanes
- Direction On Section
- South Bound
- Direction Relative
- Aligned
- Height Grade
- Start1 End1
- Linear Element Road
- A40
- Linear Element Model
- The Network Model
- Linear Element Id
- {1C6646EB-9EFE-43A3-A1D7-05AA5E400D7F}
- Linear Element Type
- Other
- From Distance
- 8 m
- To Distance
- 17 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
51.560627 -0.493139 51.560555 -0.493182
Segment 4
3 coordinate pairs- Description
- roundabout at M40 J1/A40
- 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
- Clockwise
- Direction Relative
- Aligned
- Height Grade
- Start1 End1
- Linear Element Road
- A40
- Linear Element Model
- The Network Model
- Linear Element Id
- {83C15F35-3F81-44B1-B475-7DC459EEC0A5}
- Linear Element Type
- Other
- From Distance
- 0 m
- To Distance
- 30 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
51.559937 -0.49537 51.559921 -0.495501 51.559925 -0.495815
Segment 5
6 coordinate pairs- Description
- roundabout at M40 J1/A40
- Carriageway
- Dual Carriageway
- Lane Usage
- Cl2
- Lane Number
- 2
- Lane Status
- Closed
- Lane Direction
- Aligned
- Lanes Restricted
- 1 lane restricted
- Operational Lanes
- 0 operational lanes
- Direction On Section
- Clockwise
- Direction Relative
- Aligned
- Height Grade
- Start1 End1
- Linear Element Road
- A40
- Linear Element Model
- The Network Model
- Linear Element Id
- {085F91D3-577D-401D-AA05-6B34807F9571}
- Linear Element Type
- Other
- From Distance
- 0 m
- To Distance
- 44 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
51.562649 -0.496507 51.562651 -0.496651 51.562661 -0.496752 51.562663 -0.496867 51.562655 -0.496983 51.562629 -0.497136
Segment 6
4 coordinate pairs- Description
- roundabout at M40 J1/A40
- 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
- Clockwise
- Direction Relative
- Aligned
- Height Grade
- Start1 End1
- Linear Element Road
- A40
- Linear Element Model
- The Network Model
- Linear Element Id
- {0EB1BDA0-BC0E-4E0C-8C51-EA1A74CBF64B}
- Linear Element Type
- Other
- From Distance
- 3 m
- To Distance
- 32 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
51.560055 -0.496194 51.560074 -0.496217 51.560165 -0.4963 51.560265 -0.496427
Segment 7
4 coordinate pairs- Description
- roundabout at M40 J1/A40
- Carriageway
- Dual Carriageway
- Lane Usage
- Cl2
- Lane Number
- 2
- Lane Status
- Closed
- Lane Direction
- Aligned
- Lanes Restricted
- 1 lane restricted
- Operational Lanes
- 0 operational lanes
- Direction On Section
- Clockwise
- Direction Relative
- Aligned
- Height Grade
- Start1 End1
- Linear Element Road
- A40
- Linear Element Model
- The Network Model
- Linear Element Id
- {7328BCFC-2E86-441C-864B-DD6BDA70256E}
- Linear Element Type
- Other
- From Distance
- 6 m
- To Distance
- 37 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
51.562152 -0.494843 51.562242 -0.495177 51.562249 -0.495183 51.562288 -0.495219
Segment 8
2 coordinate pairs- Description
- roundabout at M40 J1/A40
- Carriageway
- Dual Carriageway
- Lane Usage
- Cl2
- Lane Number
- 2
- Lane Status
- Closed
- Lane Direction
- Aligned
- Lanes Restricted
- 1 lane restricted
- Operational Lanes
- 0 operational lanes
- Direction On Section
- South Bound
- Direction Relative
- Aligned
- Height Grade
- Start1 End1
- Linear Element Road
- A40
- Linear Element Model
- The Network Model
- Linear Element Id
- {3DF5FF34-7930-43BB-B5D6-DAF4E7EB173D}
- Linear Element Type
- Other
- From Distance
- 0 m
- To Distance
- 8 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
51.560555 -0.493182 51.5605 -0.493267
- Geometry type
- MultiLineString
- Geometry points
- 32
- First coordinate pair
- -0.494939, 51.559896
- Road section segments
- 1
- Road section points
- 32
View geometry JSON
{
"type": "MultiLineString",
"coordinates": [
[
[
-0.494939,
51.559896
],
[
-0.495155,
51.559916
],
[
-0.49537,
51.559937
],
[
-0.496507,
51.562649
],
[
-0.496377,
51.562648
],
[
-0.496256,
51.562632
],
[
-0.496219,
51.562628
],
[
-0.496104,
51.562608
],
[
-0.495976,
51.562579
],
[
-0.495747,
51.562505
],
[
-0.495219,
51.562288
],
[
-0.493139,
51.560627
],
[
-0.493182,
51.560555
],
[
-0.49537,
51.559937
],
[
-0.495501,
51.559921
],
[
-0.495815,
51.559925
],
[
-0.496507,
51.562649
],
[
-0.496651,
51.562651
],
[
-0.496752,
51.562661
],
[
-0.496867,
51.562663
],
[
-0.496983,
51.562655
],
[
-0.497136,
51.562629
],
[
-0.496194,
51.560055
],
[
-0.496217,
51.560074
],
[
-0.4963,
51.560165
],
[
-0.496427,
51.560265
],
[
-0.494843,
51.562152
],
[
-0.495177,
51.562242
],
[
-0.495183,
51.562249
],
[
-0.495219,
51.562288
],
[
-0.493182,
51.560555
],
[
-0.493267,
51.5605
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]
}
View road section coordinates
[
[
[
-0.494939,
51.559896
],
[
-0.495155,
51.559916
],
[
-0.49537,
51.559937
],
[
-0.496507,
51.562649
],
[
-0.496377,
51.562648
],
[
-0.496256,
51.562632
],
[
-0.496219,
51.562628
],
[
-0.496104,
51.562608
],
[
-0.495976,
51.562579
],
[
-0.495747,
51.562505
],
[
-0.495219,
51.562288
],
[
-0.493139,
51.560627
],
[
-0.493182,
51.560555
],
[
-0.49537,
51.559937
],
[
-0.495501,
51.559921
],
[
-0.495815,
51.559925
],
[
-0.496507,
51.562649
],
[
-0.496651,
51.562651
],
[
-0.496752,
51.562661
],
[
-0.496867,
51.562663
],
[
-0.496983,
51.562655
],
[
-0.497136,
51.562629
],
[
-0.496194,
51.560055
],
[
-0.496217,
51.560074
],
[
-0.4963,
51.560165
],
[
-0.496427,
51.560265
],
[
-0.494843,
51.562152
],
[
-0.495177,
51.562242
],
[
-0.495183,
51.562249
],
[
-0.495219,
51.562288
],
[
-0.493182,
51.560555
],
[
-0.493267,
51.5605
]
]
]
- 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
- 1
- Record created
- Thu, Nov 13, 2025 4:14 AM
- Record versioned
- Thu, Nov 13, 2025 12:48 PM
- Coordinate source
- Geometry
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