A12 northbound Jct 17 to Jct 19 lane 1 closure (MP 124/4 to 125/4)

Planned

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 A1114/A130 And A414 Near Chelmsford (East)
Category: Road Maintenance
Direction: Northbound
Carriageway: Dual Carriageway
Lanes affected: Lane 1 closed
Reason: Maintenance Work

Live incident

Active roadworks

Planned

Cleared

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First published: Fri, Aug 14, 2026 8:06 AM
Last updated: Thu, Aug 20, 2026 11:13 PM
Cleared: Fri, Aug 21, 2026 4:00 AM

Latest update: A12 northbound Jct 17 to Jct 19 lane 1 closure (MP 124/4 to 125/4)

Coordinates: 51.714332, 0.527714
Latitude span: 51.709753 – 51.718050
Longitude span: 0.524514 – 0.528824
Bounding box centre: 51.713902, 0.526669
Location descriptions: A12 northbound between A1114/A130 and A414 near Chelmsford (east)

A12 northbound within the A414 near Chelmsford (east) 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

14 coordinate pairs

Description: A12 northbound between A1114/A130 and A414 near Chelmsford (east)
Carriageway: Dual Carriageway
Lane Usage: Cl1
Lane Number: 1
Lane Status: Closed
Lane Direction: Aligned
Lanes Restricted: 0 lanes 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: {C8044597-732C-4443-A7F8-77F03A8AB305}
Linear Element Type: A Carriageway
From Distance: 226 m
To Distance: 902 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.709753 0.524514
51.710318 0.525126
51.710987 0.5258
51.711525 0.526322
51.711966 0.526694
51.712196 0.526866
51.712427 0.527038
51.712941 0.527371
51.713412 0.527643
51.713848 0.527856
51.714071 0.527955
51.714507 0.528139
51.71473 0.528238
51.715275 0.528413

Segment 2

7 coordinate pairs

Description: A12 northbound between A1114/A130 and A414 near Chelmsford (east)
Carriageway: Dual Carriageway
Lane Usage: Cl1
Lane Number: 1
Lane Status: Closed
Lane Direction: Aligned
Lanes Restricted: 0 lanes 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: {282B2954-A9B1-4775-8127-07A4236D870B}
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

51.715275 0.528413
51.715319 0.52843
51.715525 0.528485
51.715722 0.52854
51.715901 0.528564
51.716501 0.528684
51.716806 0.528716

Segment 3

4 coordinate pairs

Description: A12 northbound within the A414 near Chelmsford (east) junction
Carriageway: Dual Carriageway
Lane Usage: Cl1
Lane Number: 1
Lane Status: Closed
Lane Direction: Aligned
Lanes Restricted: 0 lanes 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: {A051067E-31C1-463C-AF37-9DC354B98263}
Linear Element Type: A Carriageway
From Distance: 0 m
To Distance: 138 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.716806 0.528716
51.71695 0.528724
51.717498 0.528769
51.71805 0.528824

Geometry type: MultiLineString
Geometry points: 25
First coordinate pair: 0.524514, 51.709753
Road section segments: 1
Road section points: 25

View geometry JSON

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    "type": "MultiLineString",
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            [
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            [
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            [
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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: Other
Feed region label: Chelmsford