A12 northbound Jct 15 to 20A lane 1 closure (MP 113/9 to 115/2)

Planned

Start time: Fri, Aug 21, 2026 8:00 PM
Expected end: Sat, Aug 22, 2026 4:00 AM
Duration: 8 hours
Road: A12 – A12 Northbound Between B1002 And A414 Near Chelmsford (West)
Category: Road Maintenance
Direction: Northbound
Carriageway: Dual Carriageway
Lanes affected: Lane 1 closed, 1 of 2 lanes affected
Reason: Maintenance Work

Live incident

Active roadworks

Planned

Cleared

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First published: Fri, Aug 21, 2026 10:17 PM
Last updated: Fri, Aug 21, 2026 11:23 PM
Cleared: Sat, Aug 22, 2026 4:00 AM

Latest update: A12 northbound Jct 15 to 20A lane 1 closure (MP 113/9 to 115/2)

Coordinates: 51.688246, 0.406108
Latitude span: 51.679201 – 51.692861
Longitude span: 0.396934 – 0.413087
Bounding box centre: 51.686031, 0.405011
Location descriptions: A12 northbound between B1002 and A414 near Chelmsford (west)

Feed validity status: Planned
Overall feed start: Fri, Aug 21, 2026 8:00 PM
Overall feed end: Sat, Aug 22, 2026 4:00 AM
Feed window length: 8 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

18 coordinate pairs

Description: A12 northbound between B1002 and A414 near Chelmsford (west)
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: North Bound
Direction Relative: Aligned
Height Grade: Start1 End1
Linear Element Road: A12
Linear Element Model: The Network Model
Linear Element Id: {D28C671A-6E9D-4B8C-82AF-AA534761EBAD}
Linear Element Type: A Carriageway
From Distance: 354 m
To Distance: 1,797 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.679201 0.396934
51.679842 0.397531
51.681198 0.398783
51.681802 0.399341
51.682296 0.399801
51.682808 0.400277
51.683214 0.400645
51.683868 0.40123
51.684723 0.402042
51.685244 0.402514
51.687319 0.404393
51.68851 0.405516
51.688863 0.405849
51.689401 0.40637
51.689832 0.406857
51.689911 0.406947
51.690279 0.407415
51.690358 0.407535

Segment 2

3 coordinate pairs

Description: A12 northbound between B1002 and A414 near Chelmsford (west)
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: North Bound
Direction Relative: Aligned
Height Grade: Start1 End1
Linear Element Road: A12
Linear Element Model: The Network Model
Linear Element Id: {A49F3C6F-8D94-4340-8EF8-E9EB517C77FC}
Linear Element Type: A Carriageway
From Distance: 0 m
To Distance: 49 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.692676 0.412433
51.692727 0.412595
51.692861 0.413087

Segment 3

11 coordinate pairs

Description: A12 northbound between B1002 and A414 near Chelmsford (west)
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: North Bound
Direction Relative: Aligned
Height Grade: Start1 End1
Linear Element Road: A12
Linear Element Model: The Network Model
Linear Element Id: {BD797760-E644-4459-8713-A48D01EAED3E}
Linear Element Type: A Carriageway
From Distance: 0 m
To Distance: 428 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.690358 0.407535
51.690384 0.407579
51.690872 0.408343
51.691159 0.408821
51.691367 0.409194
51.691401 0.409268
51.691841 0.410203
51.692004 0.410574
51.692354 0.411475
51.692524 0.411947
51.692676 0.412433

Geometry type: MultiLineString
Geometry points: 32
First coordinate pair: 0.396934, 51.679201
Road section segments: 1
Road section points: 32

View geometry JSON

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            ],
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            [
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}

View road section coordinates

Cause type: Road Maintenance
Detailed cause: Maintenance Work
Compliance: Mandatory
Probability: Probable
Validity status: Planned
Road management: Other
Feed region label: Chelmsford