A12 northbound Jct 21 entry slip carriageway closure

Cleared

Start time: Wed, Jul 29, 2026 8:00 PM
Expected end: Thu, Jul 30, 2026 4:00 AM
Duration: 4 hours 2 seconds
Road: A12 – A12 Northbound Between B1389 Near Witham (South) And B1389 Near Witham (North)
Category: Road Maintenance
Direction: Northbound
Carriageway: Dual Carriageway
Reason: Maintenance Work

Live incident

Active roadworks

Planned

Cleared

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First published: Thu, Jun 11, 2026 1:09 PM
Last updated: Wed, Jul 29, 2026 11:29 PM
Cleared: Thu, Jul 30, 2026 12:00 AM

Latest update: A12 northbound Jct 21 entry slip carriageway closure

Coordinates: 51.784981, 0.619716
Latitude span: 51.784814 – 51.785169
Longitude span: 0.618119 – 0.623019
Bounding box centre: 51.784992, 0.620569
Location descriptions: A12 northbound between B1389 near Witham (south) and B1389 near Witham (north)

A12 northbound access from B1389 near Witham (south)

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: 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

5 coordinate pairs

Description: A12 northbound between B1389 near Witham (south) and B1389 near Witham (north)
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: {80A2F75D-3591-4406-8706-FADF3B0E21CA}
Linear Element Type: A Carriageway
From Distance: 0 m
To Distance: 169 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
51.785169 0.623019

Segment 2

12 coordinate pairs

Description: A12 northbound access from B1389 near Witham (south)
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: {FFC51310-7709-4D6D-B722-8404C17670A2}
Linear Element Type: A Carriageway Entry Slip
From Distance: 0 m
To Distance: 191 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.785167 0.618119
51.785121 0.618175
51.785048 0.618229
51.784984 0.618268
51.784938 0.618338
51.784882 0.618436
51.784844 0.618492
51.784824 0.618578
51.784814 0.618635
51.78482 0.618795
51.784883 0.619596
51.784923 0.620599

Geometry type: MultiLineString
Geometry points: 17
First coordinate pair: 0.620599, 51.784923
Road section segments: 1
Road section points: 17

View geometry JSON

{
    "type": "MultiLineString",
    "coordinates": [
        [
            [
                0.620599,
                51.784923
            ],
            [
                0.621854,
                51.785057
            ],
            [
                0.622685,
                51.785138
            ],
            [
                0.622758,
                51.785145
            ],
            [
                0.623019,
                51.785169
            ],
            [
                0.618119,
                51.785167
            ],
            [
                0.618175,
                51.785121
            ],
            [
                0.618229,
                51.785048
            ],
            [
                0.618268,
                51.784984
            ],
            [
                0.618338,
                51.784938
            ],
            [
                0.618436,
                51.784882
            ],
            [
                0.618492,
                51.784844
            ],
            [
                0.618578,
                51.784824
            ],
            [
                0.618635,
                51.784814
            ],
            [
                0.618795,
                51.78482
            ],
            [
                0.619596,
                51.784883
            ],
            [
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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: Carriageway Closures
Feed region label: Witham