Crash View

A12 northbound Jct 20A to Jct 20B lane closure (Mp 132/9a to 135/3)

Planned

A12 northbound Jct 20A to Jct 20B lane closure (Mp 132/9a to 135/3)

Start time
Thu, Aug 20, 2026 8:00 PM
Expected end
Fri, Aug 21, 2026 4:00 AM
Duration
8 hours
Road
A12 – A12 Northbound Between A138/A130 And B1137
Category
Road Maintenance
Direction
Northbound
Carriageway
Dual Carriageway
Lanes affected
Lane 1 closed, 1 of 2 lanes affected, 1 of 1 lanes affected
Reason
Repair Work
Live incident
Active roadworks
Planned
Cleared
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First published
Tue, Aug 11, 2026 7:45 AM
Last updated
Wed, Aug 19, 2026 11:50 PM
Cleared
Fri, Aug 21, 2026 4:00 AM
  • Latest update: A12 northbound Jct 20A to Jct 20B lane closure (Mp 132/9a to 135/3)
Coordinates
51.772860, 0.576891
Latitude span
51.769323 – 51.776041
Longitude span
0.560660 – 0.590858
Bounding box centre
51.772682, 0.575759
Location descriptions
  • A12 northbound between A138/A130 and B1137
  • A12 northbound within the B1137 junction
Feed validity status
Planned
Overall feed start
Thu, Aug 20, 2026 8:00 PM
Overall feed end
Fri, Aug 21, 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

8 coordinate pairs
Description
A12 northbound between A138/A130 and B1137
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
{0DFA007D-1E00-4F07-8C48-C90CF411A774}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
575 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.772685 0.575469
51.772779 0.576
51.773043 0.577479
51.773217 0.578577
51.773396 0.579602
51.773856 0.582237
51.774032 0.583248
51.77408 0.583497

Segment 2

4 coordinate pairs
Description
A12 northbound within the B1137 junction
Carriageway
Dual Carriageway
Lane Usage
Cl1
Lane Number
1
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
{C0CD02CD-8BEA-4E6C-9391-702A4E5B0F0C}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
101 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.775621 0.58955
51.775864 0.590292
51.776007 0.59074
51.776041 0.590858

Segment 3

4 coordinate pairs
Description
A12 northbound between A138/A130 and B1137
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
{07E22600-7ADD-4A17-B6C6-A66C9A36BC4D}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
95 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.772415 0.574158
51.772553 0.574828
51.772601 0.57508
51.772685 0.575469

Segment 4

13 coordinate pairs
Description
A12 northbound between A138/A130 and B1137
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
{8CF92246-1399-4926-916B-1C5A52AB89FC}
Linear Element Type
A Carriageway
From Distance
745 m
To Distance
1,589 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.769323 0.56066
51.76973 0.562418
51.769811 0.562829
51.76982 0.562873
51.769884 0.56321
51.769966 0.563591
51.77004 0.5639
51.770513 0.566116
51.770604 0.566498
51.771611 0.570614
51.771941 0.571981
51.771955 0.572043
51.771969 0.572106

Segment 5

6 coordinate pairs
Description
A12 northbound between A138/A130 and B1137
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
{FF450F31-F63D-4225-86CC-0191EC269E85}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
150 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.771969 0.572106
51.772195 0.573097
51.772257 0.573396
51.7724 0.57409
51.772401 0.574091
51.772415 0.574158

Segment 6

10 coordinate pairs
Description
A12 northbound within the B1137 junction
Carriageway
Dual Carriageway
Lane Usage
Cl1
Lane Number
1
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
{4D8620D4-6B4A-4627-B3D2-E8E088C7B0C5}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
453 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.77408 0.583497
51.774114 0.583693
51.774356 0.585089
51.774417 0.585395
51.774586 0.586118
51.774753 0.586815
51.77486 0.587161
51.774988 0.587577
51.775237 0.588343
51.775621 0.58955
Geometry type
MultiLineString
Geometry points
45
First coordinate pair
0.575469, 51.772685
Road section segments
1
Road section points
45
View geometry JSON 
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            [
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            ],
            [
                0.579602,
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            ],
            [
                0.582237,
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            [
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            ],
            [
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            [
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                0.5639,
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                0.566116,
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            ],
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            ],
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            [
                0.588343,
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            ],
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                0.58955,
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            ]
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}
View road section coordinates 
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            0.575469,
            51.772685
        ],
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            0.576,
            51.772779
        ],
        [
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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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        ],
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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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Cause type
Road Maintenance
Detailed cause
Repair Work
Compliance
Mandatory
Probability
Probable
Validity status
Planned
Road management
Other
Feed provider
National Highways
Data source
Roadworks
Feed version
1
Record created
Tue, Aug 11, 2026 7:45 AM
Record versioned
Wed, Aug 19, 2026 11:50 PM
Coordinate source
Geometry

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

A12 live closures

Related incidents

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

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

Starts in 18 hours 20 minutes

Starts 20 Aug 2026, 20:00 Expected clear 21 Aug 2026, 04:00

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 169/6 to 173/6)

Cleared Roadworks National Highways
Colchester A12 · A12 Northbound Within The B1029 Junction

Cleared 1 hour 39 minutes ago

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

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

Category: Construction Work
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 5 hours 24 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 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 39 minutes ago

Started 19 Aug 2026, 19:32 Ended 20 Aug 2026, 00:00

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 1 day 2 hours 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 1 day 14 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