Crash View

A12 northbound Jct 29 to Jct 30 lane 2 closure (MP 169/6 to 173/6)

Planned

A12 northbound Jct 29 to Jct 30 lane 2 closure (MP 169/6 to 173/6)

Start time
Wed, Aug 19, 2026 8:00 PM
Expected end
Thu, Aug 20, 2026 4:00 AM
Duration
8 hours
Road
A12 – A12 Northbound Within The B1029 Junction
Category
Construction Work
Direction
Northbound
Carriageway
Dual Carriageway
Lanes affected
Lane 2 closed, 1 of 1 lanes affected
Reason
Road Improvement Or Upgrading
Live incident
Active roadworks
Planned
Cleared
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First published
Thu, Jul 30, 2026 9:41 AM
Last updated
Wed, Aug 19, 2026 9:32 PM
Cleared
Thu, Aug 20, 2026 4:00 AM
  • Latest update: A12 northbound Jct 29 to Jct 30 lane 2 closure (MP 169/6 to 173/6)
Coordinates
51.959184, 0.969676
Latitude span
51.944562 – 51.974613
Longitude span
0.956554 – 0.987127
Bounding box centre
51.959588, 0.971841
Location descriptions
  • A12 northbound within the B1029 junction
  • A12 northbound between A120 near Colchester (east) and B1029
  • A12 northbound between B1029 and B1070
Feed validity status
Planned
Overall feed start
Wed, Aug 19, 2026 8:00 PM
Overall feed end
Thu, Aug 20, 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

4 coordinate pairs
Description
A12 northbound within the B1029 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
North Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A12
Linear Element Model
The Network Model
Linear Element Id
{C12D03F2-B694-47E7-BFCC-F52D197C2D59}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
93 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.97097 0.98195
51.971233 0.982368
51.971475 0.982763
51.971559 0.982912

Segment 2

8 coordinate pairs
Description
A12 northbound between A120 near Colchester (east) and B1029
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
North Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A12
Linear Element Model
The Network Model
Linear Element Id
{30EF73A7-3EF7-41B4-95F5-0CCCAF8D152E}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
227 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.960272 0.97161
51.960299 0.971626
51.960459 0.971695
51.960655 0.971766
51.961012 0.971863
51.961549 0.971973
51.961844 0.972034
51.962286 0.972119

Segment 3

4 coordinate pairs
Description
A12 northbound between A120 near Colchester (east) and B1029
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
North Bound
Direction Relative
Aligned
Height Grade
Start2 End2
Linear Element Road
A12
Linear Element Model
The Network Model
Linear Element Id
{F373291E-F428-448A-AEE7-92D0BF86AB11}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
287 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.95339 0.962771
51.953434 0.962817
51.954293 0.964053
51.955327 0.96554

Segment 4

10 coordinate pairs
Description
A12 northbound between A120 near Colchester (east) and B1029
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
North Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A12
Linear Element Model
The Network Model
Linear Element Id
{9DBD4F5E-99B6-449C-8331-7C665C9742E9}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
404 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.948525 0.959061
51.948652 0.959123
51.948972 0.959277
51.949273 0.959457
51.950187 0.959954
51.950906 0.960336
51.95103 0.960417
51.951277 0.960594
51.951524 0.96077
51.95194 0.961074

Segment 5

5 coordinate pairs
Description
A12 northbound between A120 near Colchester (east) and B1029
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
North Bound
Direction Relative
Aligned
Height Grade
Start2 End1
Linear Element Road
A12
Linear Element Model
The Network Model
Linear Element Id
{6F1E6B37-4FEE-4C71-A76E-FEA4184DB6AC}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
236 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.955327 0.96554
51.95582 0.96625
51.956723 0.967561
51.956861 0.967774
51.956905 0.967835

Segment 6

5 coordinate pairs
Description
A12 northbound between A120 near Colchester (east) and B1029
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
North Bound
Direction Relative
Aligned
Height Grade
Start1 End2
Linear Element Road
A12
Linear Element Model
The Network Model
Linear Element Id
{C1193369-174D-40F1-94E7-4C05E8A98C2A}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
199 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.95194 0.961074
51.952256 0.961371
51.952746 0.961913
51.95306 0.962298
51.95339 0.962771

Segment 7

2 coordinate pairs
Description
A12 northbound between B1029 and B1070
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
North Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A12
Linear Element Model
The Network Model
Linear Element Id
{630EE45C-C43F-47D2-89B6-AFE59860FCB3}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
31 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.974375 0.986873
51.974613 0.987127

Segment 8

13 coordinate pairs
Description
A12 northbound between A120 near Colchester (east) and B1029
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
North Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A12
Linear Element Model
The Network Model
Linear Element Id
{998C460A-902D-4610-8657-5221B5FA112E}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
386 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.945277 0.957084
51.94548 0.957214
51.945728 0.957384
51.945878 0.957487
51.94648 0.957876
51.946701 0.958022
51.946914 0.958123
51.947056 0.958203
51.947615 0.958519
51.948466 0.959026
51.948499 0.959047
51.948519 0.959058
51.948525 0.959061

Segment 9

3 coordinate pairs
Description
A12 northbound between A120 near Colchester (east) and B1029
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
North Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A12
Linear Element Model
The Network Model
Linear Element Id
{40784D21-AB0F-4EA9-BDF7-BB5C62A14EAF}
Linear Element Type
A Carriageway
From Distance
462 m
To Distance
550 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.944562 0.956554
51.944906 0.956812
51.945277 0.957084

Segment 10

3 coordinate pairs
Description
A12 northbound between B1029 and B1070
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
North Bound
Direction Relative
Aligned
Height Grade
Start1 End2
Linear Element Road
A12
Linear Element Model
The Network Model
Linear Element Id
{86D69312-BCCB-4C2F-B0AB-1F33724932B8}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
129 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.971559 0.982912
51.972242 0.984081
51.972363 0.984278

Segment 11

13 coordinate pairs
Description
A12 northbound between A120 near Colchester (east) and B1029
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
North Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A12
Linear Element Model
The Network Model
Linear Element Id
{BE224BD1-D66B-4EEA-8A08-86EC0E706403}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
460 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.956905 0.967835
51.957087 0.96808
51.958015 0.969437
51.958563 0.970201
51.958624 0.970273
51.958825 0.97051
51.959044 0.970743
51.959334 0.971009
51.959651 0.971263
51.959713 0.971296
51.960006 0.971476
51.96013 0.971542
51.960272 0.97161

Segment 12

2 coordinate pairs
Description
A12 northbound between A120 near Colchester (east) and B1029
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
North Bound
Direction Relative
Aligned
Height Grade
Start1 End2
Linear Element Road
A12
Linear Element Model
The Network Model
Linear Element Id
{B9E8D942-2C18-454B-8CD6-5405EA25E6FE}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
40 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.962286 0.972119
51.962644 0.972188

Segment 13

7 coordinate pairs
Description
A12 northbound between B1029 and B1070
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
North Bound
Direction Relative
Aligned
Height Grade
Start2 End1
Linear Element Road
A12
Linear Element Model
The Network Model
Linear Element Id
{753ED095-0D8D-4A47-9FD1-AB56F0201AE8}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
287 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.972363 0.984278
51.972847 0.985053
51.972977 0.985251
51.97336 0.985742
51.973464 0.98588
51.973849 0.986314
51.974375 0.986873

Segment 14

19 coordinate pairs
Description
A12 northbound between A120 near Colchester (east) and B1029
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
North Bound
Direction Relative
Aligned
Height Grade
Start2 End1
Linear Element Road
A12
Linear Element Model
The Network Model
Linear Element Id
{0710D061-799A-481F-B930-D3EFEE8BA2A7}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
1,175 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.962644 0.972188
51.963115 0.972279
51.963652 0.972401
51.963946 0.972494
51.964044 0.972535
51.964231 0.972614
51.96432 0.972649
51.96463 0.97283
51.964957 0.973056
51.965204 0.973247
51.965459 0.973467
51.965766 0.973794
51.965906 0.973963
51.966236 0.974407
51.966375 0.974606
51.96686 0.975366
51.969095 0.978978
51.969924 0.980324
51.97097 0.98195
Geometry type
MultiLineString
Geometry points
98
First coordinate pair
0.981950, 51.970970
Road section segments
1
Road section points
98
View geometry JSON 
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            ],
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            ],
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}
View road section coordinates 
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]
Cause type
Construction Work
Detailed cause
Road Improvement Or Upgrading
Compliance
Mandatory
Probability
Probable
Validity status
Planned
Road management
Other
Feed region label
Colchester
Feed provider
National Highways
Data source
Roadworks
Feed version
1
Record created
Thu, Jul 30, 2026 9:41 AM
Record versioned
Wed, Aug 19, 2026 9:32 PM
Coordinate source
Geometry

Driving on the A12? See every live closure, roadwork and planned restriction on this road.

A12 live closures

Related incidents

A120 both directions Crown Interchange to Bromley Road lane 1 closures (MP 150/8 to 155/3

Cleared Roadworks National Highways
Colchester A120 · A120 Eastbound Between A12 Near Colchester (East) And A133

Cleared 42 minutes 47 seconds ago

Started 19 Aug 2026, 21:00 Ended 19 Aug 2026, 21:05

A120 both directions Crown Interchange to Bromley Road lane 1 closures (MP 150/8 to 155/3

Category: Road Maintenance
View update

A12 northbound Jct 12 to Jct 13 lane 1 closure (MP 109/1 to 110/5)

Cleared Roadworks National Highways
Brentwood A12 · A12 Northbound Between A1023 And B1002

Cleared 1 hour 32 minutes ago

Started 19 Aug 2026, 20:00 Ended 19 Aug 2026, 20:15

A12 northbound Jct 12 to Jct 13 lane 1 closure (MP 109/1 to 110/5)

Category: Road Maintenance
View update

A12 northbound Jct 15 exit slip road lane 2 closure

Cleared Roadworks National Highways
Chelmsford A12 · A12 Northbound Between B1002 And A414 Near Chelmsford (West)

Cleared 22 hours 37 minutes ago

Started 18 Aug 2026, 20:01 Ended 18 Aug 2026, 23:10

A12 northbound Jct 15 exit slip road lane 2 closure

Category: Road Maintenance
View update

A12 northbound Jct 14 to 15 lane 1 closure (MP 114/1 to 116/8)

Cleared Roadworks National Highways
Chelmsford A12 · A12 Northbound Within The A414 Near Chelmsford (West) Junction

Cleared 20 hours 22 minutes ago

Started 18 Aug 2026, 20:01 Ended 19 Aug 2026, 01:25

A12 northbound Jct 14 to 15 lane 1 closure (MP 114/1 to 116/8)

Category: Road Maintenance
View update

A12 northbound Jct 12 to Jct 13 lane 1 closure (MP 109/1 to 110/5)

Cleared Roadworks National Highways
Brentwood A12 · A12 Northbound Between A1023 And B1002

Cleared 21 hours 17 minutes ago

Started 18 Aug 2026, 20:00 Ended 19 Aug 2026, 00:30

A12 northbound Jct 12 to Jct 13 lane 1 closure (MP 109/1 to 110/5)

Category: Road Maintenance
View update

A12 northbound Jct 29 to Jct 30 lane 2 closure (MP 166/1 to 170/3)

Cleared Roadworks National Highways
Colchester A12 · A12 Northbound Between A120 Near Colchester (East) And B1029

Cleared 17 hours 47 minutes ago

Started 18 Aug 2026, 20:00 Ended 19 Aug 2026, 04:00

A12 northbound Jct 29 to Jct 30 lane 2 closure (MP 166/1 to 170/3)

Category: Construction Work
View update