A12 northbound Jct 21 lane 1 closure (MP 136/4 to 139/7)

Cleared

A12 northbound Jct 21 lane 1 closure (MP 136/4 to 139/7)

Start time
Wed, Jul 29, 2026 8:00 PM
Expected end
Thu, Jul 30, 2026 4:00 AM
Duration
8 hours
Road
A12 – A12 Northbound Between B1137 And B1389 Near Witham (South)
Category
Road Maintenance
Direction
Northbound
Carriageway
Dual Carriageway
Lanes affected
Lane 1 closed, 1 of 1 lanes affected
Reason
Maintenance Work
Live incident
Active roadworks
Planned
Cleared
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First published
Thu, Jun 11, 2026 1:09 PM
Last updated
Thu, Jul 30, 2026 3:46 AM
Cleared
Thu, Jul 30, 2026 4:00 AM
  • Latest update: A12 northbound Jct 21 lane 1 closure (MP 136/4 to 139/7)
Coordinates
51.786195, 0.630435
Latitude span
51.781457 – 51.792313
Longitude span
0.611465 – 0.649624
Bounding box centre
51.786885, 0.630545
Location descriptions
  • A12 northbound between B1137 and B1389 near Witham (south)
  • A12 northbound between B1389 near Witham (south) and B1389 near Witham (north)
  • A12 northbound within the B1389 near Witham (south) junction
Feed validity status
Planned
Overall feed start
Wed, Jul 29, 2026 8:00 PM
Overall feed end
Thu, Jul 30, 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

6 coordinate pairs
Description
A12 northbound between B1137 and B1389 near Witham (south)
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
{87228FE9-B9C4-45C0-B1D4-364DB9726EE4}
Linear Element Type
A Carriageway
From Distance
570 m
To Distance
794 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list
51.781457 0.611465
51.781568 0.611763
51.781789 0.612327
51.782107 0.612998
51.782288 0.613356
51.782677 0.614031

Segment 2

15 coordinate pairs
Description
A12 northbound between B1389 near Witham (south) and B1389 near Witham (north)
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
Start2 End2
Linear Element Road
A12
Linear Element Model
The Network Model
Linear Element Id
{4F8C5543-B7C8-4439-B15C-366D5EB76DA3}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
640 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list
51.788473 0.642804
51.788679 0.643251
51.788876 0.643683
51.789365 0.644756
51.789527 0.645114
51.790037 0.646161
51.790358 0.646811
51.790534 0.647162
51.790778 0.647588
51.791018 0.648014
51.791331 0.648468
51.79148 0.648665
51.791795 0.649046
51.791961 0.649244
51.792313 0.649624

Segment 3

6 coordinate pairs
Description
A12 northbound between B1389 near Witham (south) and B1389 near Witham (north)
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
{80A2F75D-3591-4406-8706-FADF3B0E21CA}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
645 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list
51.784923 0.620599
51.785057 0.621854
51.785138 0.622685
51.785145 0.622758
51.785413 0.625659
51.785823 0.629847

Segment 4

12 coordinate pairs
Description
A12 northbound within the B1389 near Witham (south) 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
{4337DA7C-1397-4AD5-9D4B-A084C6C7CD4A}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
302 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list
51.782677 0.614031
51.782772 0.614211
51.783074 0.614808
51.783393 0.615407
51.783557 0.615706
51.78372 0.616078
51.78384 0.616361
51.783951 0.616628
51.784044 0.616894
51.784146 0.617161
51.784194 0.617304
51.78428 0.617556

Segment 5

7 coordinate pairs
Description
A12 northbound within the B1389 near Witham (south) 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
{AC8E23F4-D6C8-4BCC-9A30-BB0F31AA7618}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
222 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list
51.78428 0.617556
51.784305 0.617678
51.784595 0.618768
51.784773 0.619663
51.784886 0.620264
51.784909 0.620454
51.784923 0.620599

Segment 6

22 coordinate pairs
Description
A12 northbound between B1389 near Witham (south) and B1389 near Witham (north)
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 End2
Linear Element Road
A12
Linear Element Model
The Network Model
Linear Element Id
{DFD2A102-8E2B-456D-8E38-B0EAE8EC58E6}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
794 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list
51.785945 0.632321
51.785947 0.632345
51.785989 0.633683
51.785994 0.633843
51.786018 0.634381
51.786104 0.635386
51.786134 0.63562
51.786229 0.636206
51.78626 0.636425
51.786397 0.637158
51.786438 0.637334
51.78651 0.63773
51.786559 0.637936
51.786659 0.638275
51.786668 0.638303
51.786835 0.638866
51.787063 0.639531
51.787139 0.639739
51.787335 0.640214
51.787814 0.641301
51.788199 0.642179
51.788473 0.642804

Segment 7

5 coordinate pairs
Description
A12 northbound between B1389 near Witham (south) and B1389 near Witham (north)
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
{B71781D6-0F26-451D-8CAC-1422E431B6BA}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
171 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list
51.785823 0.629847
51.785823 0.629849
51.785823 0.629852
51.785899 0.631454
51.785945 0.632321
Geometry type
MultiLineString
Geometry points
73
First coordinate pair
0.611465, 51.781457
Road section segments
1
Road section points
73
View geometry JSON
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View road section coordinates
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Cause type
Road Maintenance
Detailed cause
Maintenance Work
Compliance
Mandatory
Probability
Probable
Validity status
Planned
Road management
Other
Feed region label
Witham
Feed provider
National Highways
Data source
Roadworks
Feed version
1
Record created
Thu, Jun 11, 2026 1:09 PM
Record versioned
Thu, Jul 30, 2026 3:46 AM
Coordinate source
Geometry

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

A12 live closures

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