A12 northbound Jct 29 to Jct 31 carriageway closure

Cleared

A12 northbound Jct 29 to Jct 31 carriageway closure

Start time
Sun, Apr 19, 2026 8:00 PM
Expected end
Mon, Apr 20, 2026 4:00 AM
Duration
8 hours
Road
A12 – A12 Northbound Between A120 Near Colchester (East) And B1029
Category
Road Maintenance
Direction
Northbound
Carriageway
Dual Carriageway
Reason
Roadworks
Live incident
Active roadworks
Planned
Cleared
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First published
Tue, Mar 24, 2026 4:45 PM
Last updated
Mon, Apr 20, 2026 2:36 AM
Cleared
Mon, Apr 20, 2026 4:00 AM
  • Latest update: A12 northbound Jct 29 to Jct 31 carriageway closure
Coordinates
51.951093, 0.962124
Latitude span
51.930958 – 51.972145
Longitude span
0.944180 – 0.983915
Bounding box centre
51.951552, 0.964048
Location descriptions
  • A12 northbound between A120 near Colchester (east) and B1029
  • A12 northbound exit at a minor junction between A120 near Colchester (east) and B1029
  • A12 northbound at a minor junction between A120 near Colchester (east) and B1029
  • A12 northbound between B1029 and B1070
  • A12 northbound access from B1029
Feed validity status
Planned
Overall feed start
Sun, Apr 19, 2026 8:00 PM
Overall feed end
Mon, Apr 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
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

6 coordinate pairs
Description
A12 northbound between A120 near Colchester (east) and B1029
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
A12
Linear Element Model
The Network Model
Linear Element Id
{2F3FEF2C-BA4C-47D3-B28E-FB03D1CD17A2}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
282 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list
51.937123 0.950666
51.937348 0.950854
51.938338 0.951637
51.938689 0.951943
51.939111 0.952266
51.939401 0.952488

Segment 2

5 coordinate pairs
Description
A12 northbound between A120 near Colchester (east) and B1029
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
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 3

3 coordinate pairs
Description
A12 northbound between A120 near Colchester (east) and B1029
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
A12
Linear Element Model
The Network Model
Linear Element Id
{CFE28B3C-E98B-44CD-8110-AEED063F803D}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
27 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list
51.931759 0.944631
51.931969 0.944773
51.931983 0.944785

Segment 4

8 coordinate pairs
Description
A12 northbound between A120 near Colchester (east) and B1029
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
A12
Linear Element Model
The Network Model
Linear Element Id
{40784D21-AB0F-4EA9-BDF7-BB5C62A14EAF}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
550 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list
51.940835 0.953571
51.941827 0.954412
51.942462 0.954921
51.943114 0.955443
51.943547 0.955777
51.944164 0.956254
51.944906 0.956812
51.945277 0.957084

Segment 5

4 coordinate pairs
Description
A12 northbound exit at a minor junction between A120 near Colchester (east) and B1029
Carriageway
Single Carriageway
Lanes Restricted
1 lane restricted
Operational Lanes
0 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
{91AD82F6-E217-49EB-BF3A-7713C39BD355}
Linear Element Type
A Carriageway Exit Slip
From Distance
0 m
To Distance
64 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list
51.952841 0.96162
51.95303 0.961714
51.953359 0.961852
51.953398 0.961867

Segment 6

2 coordinate pairs
Description
A12 northbound between A120 near Colchester (east) and B1029
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
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 7

8 coordinate pairs
Description
A12 northbound between A120 near Colchester (east) and B1029
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
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 8

4 coordinate pairs
Description
A12 northbound at a minor junction between A120 near Colchester (east) and B1029
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
A12
Linear Element Model
The Network Model
Linear Element Id
{D42C1647-56FB-4DF5-9E66-1B42E4B1EC26}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
176 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list
51.939401 0.952488
51.939903 0.952876
51.940379 0.953245
51.940835 0.953571

Segment 9

13 coordinate pairs
Description
A12 northbound between A120 near Colchester (east) and B1029
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
A12
Linear Element Model
The Network Model
Linear Element Id
{FB6D5241-2BC6-4B8A-9630-FDD1A964394E}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
704 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list
51.931983 0.944785
51.932249 0.945008
51.932427 0.945153
51.932778 0.945481
51.933096 0.945851
51.933481 0.946344
51.933872 0.946918
51.934735 0.94817
51.93503 0.948597
51.935414 0.949073
51.935724 0.949452
51.936158 0.949864
51.937123 0.950666

Segment 10

2 coordinate pairs
Description
A12 northbound between A120 near Colchester (east) and B1029
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
A12
Linear Element Model
The Network Model
Linear Element Id
{9DBD4F5E-99B6-449C-8331-7C665C9742E9}
Linear Element Type
A Carriageway
From Distance
386 m
To Distance
404 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list
51.951791 0.960965
51.95194 0.961074

Segment 11

2 coordinate pairs
Description
A12 northbound between B1029 and B1070
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
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
94 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list
51.971559 0.982912
51.972145 0.983915

Segment 12

13 coordinate pairs
Description
A12 northbound between A120 near Colchester (east) and B1029
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
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 13

18 coordinate pairs
Description
A12 northbound between A120 near Colchester (east) and B1029
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
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
1,011 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
51.969907 0.980297

Segment 14

2 coordinate pairs
Description
A12 northbound at a minor junction between A120 near Colchester (east) and B1029
Carriageway
Single Carriageway
Lanes Restricted
1 lane restricted
Operational Lanes
0 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
{025711A5-2D58-488C-A235-96B45B53CCFA}
Linear Element Type
Other
From Distance
0 m
To Distance
21 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list
51.939947 0.952766
51.940118 0.9529

Segment 15

5 coordinate pairs
Description
A12 northbound between A120 near Colchester (east) and B1029
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
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 16

13 coordinate pairs
Description
A12 northbound between A120 near Colchester (east) and B1029
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
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 17

6 coordinate pairs
Description
A12 northbound exit at a minor junction between A120 near Colchester (east) and B1029
Lanes Restricted
1 lane restricted
Operational Lanes
0 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
{0B2E330C-B788-4CCC-8299-0BB8391C12D3}
Linear Element Type
A Carriageway Exit Slip
From Distance
0 m
To Distance
107 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list
51.95194 0.961074
51.952001 0.961122
51.952134 0.961218
51.952293 0.961316
51.952692 0.961546
51.952841 0.96162

Segment 18

10 coordinate pairs
Description
A12 northbound between A120 near Colchester (east) and B1029
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
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 19

4 coordinate pairs
Description
A12 northbound between A120 near Colchester (east) and B1029
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
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 20

4 coordinate pairs
Description
A12 northbound exit at a minor junction between A120 near Colchester (east) and B1029
Lanes Restricted
1 lane restricted
Operational Lanes
0 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
{F56A2B0F-8184-4F28-8C1A-6AE5ECD8E069}
Linear Element Type
A Carriageway Exit Slip
From Distance
0 m
To Distance
63 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list
51.939401 0.952488
51.939541 0.952522
51.939864 0.952724
51.939947 0.952766

Segment 21

5 coordinate pairs
Description
A12 northbound between A120 near Colchester (east) and B1029
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
A12
Linear Element Model
The Network Model
Linear Element Id
{A8CFE18D-1A79-4A73-9113-B67461F33F78}
Linear Element Type
A Carriageway
From Distance
219 m
To Distance
314 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list
51.930958 0.94418
51.931446 0.944477
51.931632 0.94459
51.93172 0.94463
51.931759 0.944631

Segment 22

5 coordinate pairs
Description
A12 northbound between A120 near Colchester (east) and B1029
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
A12
Linear Element Model
The Network Model
Linear Element Id
{2F3FEF2C-BA4C-47D3-B28E-FB03D1CD17A2}
Linear Element Type
A Carriageway
From Distance
144 m
To Distance
282 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list
51.938288 0.951597
51.938338 0.951637
51.938689 0.951943
51.939111 0.952266
51.939401 0.952488

Segment 23

9 coordinate pairs
Description
A12 northbound access from B1029
Lanes Restricted
1 lane restricted
Operational Lanes
0 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
{A8610D6C-3FFD-4544-A72C-AB43BF6A4BF4}
Linear Element Type
A Carriageway Entry Slip
From Distance
4 m
To Distance
78 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list
51.971665 0.982015
51.971581 0.982129
51.97153 0.982198
51.971506 0.982231
51.971467 0.982302
51.971449 0.982371
51.971443 0.982421
51.971481 0.982629
51.971559 0.982912
Geometry type
MultiLineString
Geometry points
151
First coordinate pair
0.950666, 51.937123
Road section segments
1
Road section points
151
View geometry JSON
{
    "type": "MultiLineString",
    "coordinates": [
        [
            [
                0.950666,
                51.937123
            ],
            [
                0.950854,
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            ],
            [
                0.951637,
                51.938338
            ],
            [
                0.951943,
                51.938689
            ],
            [
                0.952266,
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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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                0.954921,
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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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                0.961714,
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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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            ],
            [
                0.971973,
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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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            ],
            [
                0.945153,
                51.932427
            ],
            [
                0.945481,
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            ],
            [
                0.945851,
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View road section coordinates
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Cause type
Road Maintenance
Detailed cause
Roadworks
Compliance
Mandatory
Probability
Probable
Validity status
Planned
Road management
Carriageway Closures
Feed region label
Colchester
Feed provider
National Highways
Data source
Roadworks
Feed version
1
Record created
Tue, Mar 24, 2026 4:45 PM
Record versioned
Mon, Apr 20, 2026 2:36 AM
Coordinate source
Geometry

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

A12 live closures

Related incidents

A120 eastbound Ardleigh to Bromley lane closure (MP 153/6 to 154/6)

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

Starts in 7 hours 50 minutes

Starts 14 Jun 2026, 19:00 Expected clear 15 Jun 2026, 04:00

A120 eastbound Ardleigh to Bromley lane closure (MP 153/6 to 154/6)

Category: Road Maintenance
View update

A12 northbound Jct 11 to Jct 12 lane 2 closure

Cleared Roadworks National Highways
Havering A12 · A12 Northbound Between M25 And A1023

Cleared 7 hours 9 minutes ago

Started 13 Jun 2026, 20:00 Ended 14 Jun 2026, 04:00

A12 northbound Jct 11 to Jct 12 lane 2 closure

Category: Road Maintenance
View update

A12 northbound Jct 15 to Jct 19 carriageway closure

Cleared Roadworks National Highways
Chelmsford A12 · A12 Northbound Between B1007 And A1114/A130

Cleared 7 hours 9 minutes ago

Started 13 Jun 2026, 20:00 Ended 14 Jun 2026, 04:00

A12 northbound Jct 15 to Jct 19 carriageway closure

Category: Road Maintenance
View update

A12 northbound Ipswich Road exit slip carriageway closure

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

Cleared 1 day 7 hours ago

Started 13 Jun 2026, 01:00 Ended 13 Jun 2026, 04:00

A12 northbound Ipswich Road exit slip carriageway closure

Category: Road Maintenance
View update

A12 northbound Jct 28 exit slip carriageway closure

Cleared Roadworks National Highways
Colchester A12 · A12 Northbound Exit At A Minor Junction Between A133 And A120 Near Colchester (East)

Cleared 1 day 12 hours ago

Started 12 Jun 2026, 22:00 Ended 12 Jun 2026, 22:40

A12 northbound Jct 28 exit slip carriageway closure

Category: Road Maintenance
View update

A12 northbound Jct 28 entry slip carriageway closure

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

Cleared 1 day 15 hours ago

Started 12 Jun 2026, 20:00 Ended 12 Jun 2026, 20:00

A12 northbound Jct 28 entry slip carriageway closure

Category: Road Maintenance
View update