Crash View

A421 eastbound Marsh Leys to Wilstead junction - lane 1 closure

Cleared

A421 eastbound Marsh Leys to Wilstead junction - lane 1 closure

Start time
Wed, Sep 30, 2026 8:00 PM
Expected end
Thu, Oct 1, 2026 4:00 AM
Duration
7 hours 45 minutes 1 second
Road
A421 – A421 Northbound Within The A6 Junction
Category
Authority Operation
Direction
Eastbound
Carriageway
Dual Carriageway
Lanes affected
Lane 1 closed, 1 of 1 lanes affected
Reason
Other
Live incident
Active roadworks
Planned
Cleared
Hover or tap markers for full details

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First published
Wed, Sep 23, 2026 2:32 PM
Last updated
Thu, Oct 1, 2026 3:32 AM
Cleared
Thu, Oct 1, 2026 3:45 AM
  • Latest update: A421 eastbound Marsh Leys to Wilstead junction - lane 1 closure
Coordinates
52.105882, -0.489402
Latitude span
52.104019 – 52.107578
Longitude span
-0.503508 – -0.476547
Bounding box centre
52.105799, -0.490028
Location descriptions
  • A421 northbound within the A6 junction
  • A421 northbound within A428
  • A421 northbound between A428 and A6
Feed validity status
Planned
Overall feed start
Wed, Sep 30, 2026 8:00 PM
Overall feed end
Thu, Oct 1, 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
A421 northbound within the A6 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
East Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A421
Linear Element Model
The Network Model
Linear Element Id
{AFA2AF44-39A0-486D-8E45-DC77439749C8}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
269 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
52.106946 -0.480339
52.107014 -0.479777
52.107065 -0.479346
52.107115 -0.479057
52.107307 -0.47795
52.107578 -0.476547

Segment 2

2 coordinate pairs
Description
A421 northbound within the A6 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
East Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A421
Linear Element Model
The Network Model
Linear Element Id
{CE7B6AEF-754C-4978-B2F6-D8E899AB1D4F}
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 
52.106838 -0.480901
52.106946 -0.480339

Segment 3

7 coordinate pairs
Description
A421 northbound within A428
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
East Bound
Direction Relative
Aligned
Height Grade
Start2 End1
Linear Element Road
A421
Linear Element Model
The Network Model
Linear Element Id
{6132CF69-858D-4AB9-B24E-01A4983F5F63}
Linear Element Type
A Carriageway
From Distance
95 m
To Distance
523 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
52.104019 -0.503508
52.104168 -0.503051
52.104488 -0.501772
52.10462 -0.501121
52.104801 -0.499939
52.104875 -0.499222
52.105059 -0.49752

Segment 4

14 coordinate pairs
Description
A421 northbound between A428 and A6
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
East Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A421
Linear Element Model
The Network Model
Linear Element Id
{424904E7-C1FF-4482-B4B6-6EAD8A675F72}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
1,156 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
52.105059 -0.49752
52.105153 -0.496495
52.105225 -0.495719
52.10532 -0.494766
52.105398 -0.493858
52.105555 -0.492013
52.105745 -0.489875
52.105969 -0.487608
52.106028 -0.486946
52.106076 -0.486472
52.106173 -0.485509
52.106517 -0.482869
52.106691 -0.48171
52.106838 -0.480901
Geometry type
MultiLineString
Geometry points
29
First coordinate pair
-0.480339, 52.106946
Road section segments
1
Road section points
29
View geometry JSON 
{
    "type": "MultiLineString",
    "coordinates": [
        [
            [
                -0.480339,
                52.106946
            ],
            [
                -0.479777,
                52.107014
            ],
            [
                -0.479346,
                52.107065
            ],
            [
                -0.479057,
                52.107115
            ],
            [
                -0.47795,
                52.107307
            ],
            [
                -0.476547,
                52.107578
            ],
            [
                -0.480901,
                52.106838
            ],
            [
                -0.480339,
                52.106946
            ],
            [
                -0.503508,
                52.104019
            ],
            [
                -0.503051,
                52.104168
            ],
            [
                -0.501772,
                52.104488
            ],
            [
                -0.501121,
                52.10462
            ],
            [
                -0.499939,
                52.104801
            ],
            [
                -0.499222,
                52.104875
            ],
            [
                -0.49752,
                52.105059
            ],
            [
                -0.49752,
                52.105059
            ],
            [
                -0.496495,
                52.105153
            ],
            [
                -0.495719,
                52.105225
            ],
            [
                -0.494766,
                52.10532
            ],
            [
                -0.493858,
                52.105398
            ],
            [
                -0.492013,
                52.105555
            ],
            [
                -0.489875,
                52.105745
            ],
            [
                -0.487608,
                52.105969
            ],
            [
                -0.486946,
                52.106028
            ],
            [
                -0.486472,
                52.106076
            ],
            [
                -0.485509,
                52.106173
            ],
            [
                -0.482869,
                52.106517
            ],
            [
                -0.48171,
                52.106691
            ],
            [
                -0.480901,
                52.106838
            ]
        ]
    ]
}
View road section coordinates 
[
    [
        [
            -0.480339,
            52.106946
        ],
        [
            -0.479777,
            52.107014
        ],
        [
            -0.479346,
            52.107065
        ],
        [
            -0.479057,
            52.107115
        ],
        [
            -0.47795,
            52.107307
        ],
        [
            -0.476547,
            52.107578
        ],
        [
            -0.480901,
            52.106838
        ],
        [
            -0.480339,
            52.106946
        ],
        [
            -0.503508,
            52.104019
        ],
        [
            -0.503051,
            52.104168
        ],
        [
            -0.501772,
            52.104488
        ],
        [
            -0.501121,
            52.10462
        ],
        [
            -0.499939,
            52.104801
        ],
        [
            -0.499222,
            52.104875
        ],
        [
            -0.49752,
            52.105059
        ],
        [
            -0.49752,
            52.105059
        ],
        [
            -0.496495,
            52.105153
        ],
        [
            -0.495719,
            52.105225
        ],
        [
            -0.494766,
            52.10532
        ],
        [
            -0.493858,
            52.105398
        ],
        [
            -0.492013,
            52.105555
        ],
        [
            -0.489875,
            52.105745
        ],
        [
            -0.487608,
            52.105969
        ],
        [
            -0.486946,
            52.106028
        ],
        [
            -0.486472,
            52.106076
        ],
        [
            -0.485509,
            52.106173
        ],
        [
            -0.482869,
            52.106517
        ],
        [
            -0.48171,
            52.106691
        ],
        [
            -0.480901,
            52.106838
        ]
    ]
]
Cause type
Authority Operation
Detailed cause
Other
Compliance
Mandatory
Probability
Probable
Validity status
Planned
Road management
Other
Feed provider
National Highways
Data source
Roadworks
Feed version
1
Record created
Wed, Sep 23, 2026 2:32 PM
Record versioned
Thu, Oct 1, 2026 3:32 AM
Coordinate source
Geometry

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