A421 eastbound - Cardington Jct to Black Cat roundabout - carriageway closure and slip road closure
ClearedA421 eastbound - Cardington Jct to Black Cat roundabout - carriageway closure and slip road closure
- Start time
- Tue, May 19, 2026 7:00 PM
- Expected end
- Wed, May 20, 2026 5:00 AM
- Duration
- 10 hours
- Road
- A421 – A421 Northbound Between A4280 And A1
- Category
- Construction Work
- Direction
- Eastbound
- Carriageway
- Dual Carriageway
- Reason
- Road Improvement Or Upgrading
Move Insights
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- First published
- Sun, May 17, 2026 7:17 PM
- Last updated
- Tue, May 19, 2026 8:44 PM
- Cleared
- Wed, May 20, 2026 5:00 AM
- Latest update: A421 eastbound - Cardington Jct to Black Cat roundabout - carriageway closure and slip road closure
- Coordinates
- 52.150675, -0.379301
- Latitude span
- 52.120237 – 52.184942
- Longitude span
- -0.426936 – -0.305895
- Bounding box centre
- 52.152590, -0.366416
- Location descriptions
-
- A421 northbound between A4280 and A1
- roundabout at A1/A421
- A421 northbound access from A603
- A421 northbound within the A603 junction
- A421 northbound between A603 and A4280
- A421 northbound access from A4280
- A421 northbound between A600 and A603
- Feed validity status
- Planned
- Overall feed start
- Tue, May 19, 2026 7:00 PM
- Overall feed end
- Wed, May 20, 2026 5:00 AM
- Feed window length
- 10 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
14 coordinate pairs- Description
- A421 northbound between A4280 and A1
- Carriageway
- Dual Carriageway
- Lanes Restricted
- 3 lanes restricted
- Operational Lanes
- 0 operational lanes
- 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
- {A0907D2B-FE9F-42CC-BB0A-F537783E843B}
- Linear Element Type
- A Carriageway
- From Distance
- 0 m
- To Distance
- 1,487 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
52.168574 -0.349233 52.168599 -0.348219 52.168654 -0.346754 52.16874 -0.345621 52.168897 -0.3441 52.169221 -0.341881 52.169441 -0.340638 52.169977 -0.338227 52.170274 -0.337112 52.170836 -0.335339 52.171406 -0.33375 52.171979 -0.332371 52.172779 -0.330668 52.173428 -0.329495
Segment 2
10 coordinate pairs- Description
- A421 northbound between A4280 and A1
- Carriageway
- Dual Carriageway
- Lanes Restricted
- 3 lanes restricted
- Operational Lanes
- 0 operational lanes
- 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
- {5D5E96DF-FA06-4427-9F9C-7D7219175255}
- Linear Element Type
- A Carriageway
- From Distance
- 0 m
- To Distance
- 954 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
52.178954 -0.322234 52.180692 -0.320206 52.181646 -0.319086 52.182718 -0.317413 52.183046 -0.3168 52.183628 -0.315511 52.184047 -0.314303 52.184361 -0.313239 52.184586 -0.312307 52.184614 -0.312151
Segment 3
3 coordinate pairs- Description
- A421 northbound between A4280 and A1
- Carriageway
- Dual Carriageway
- Lanes Restricted
- 3 lanes restricted
- Operational Lanes
- 0 operational lanes
- 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
- {A0907D2B-FE9F-42CC-BB0A-F537783E843B}
- Linear Element Type
- A Carriageway
- From Distance
- 0 m
- To Distance
- 116 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
52.168574 -0.349233 52.168599 -0.348219 52.168625 -0.347535
Segment 4
13 coordinate pairs- Description
- A421 northbound between A4280 and A1
- Carriageway
- Dual Carriageway
- Lanes Restricted
- 3 lanes restricted
- Operational Lanes
- 0 operational lanes
- Direction On Section
- East Bound
- Direction Relative
- Aligned
- Height Grade
- Start1 End2
- Linear Element Road
- A421
- Linear Element Model
- The Network Model
- Linear Element Id
- {061170C3-77A1-4319-A28C-CA44FF2019D9}
- Linear Element Type
- A Carriageway
- From Distance
- 0 m
- To Distance
- 993 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
52.154363 -0.381219 52.154787 -0.380692 52.155236 -0.380153 52.155595 -0.379771 52.155718 -0.379646 52.156605 -0.378742 52.157413 -0.378048 52.158319 -0.377324 52.159046 -0.376673 52.159922 -0.37585 52.161077 -0.374551 52.161869 -0.373545 52.161904 -0.373494
Segment 5
2 coordinate pairs- Description
- roundabout at A1/A421
- Lanes Restricted
- 3 lanes restricted
- Operational Lanes
- 0 operational lanes
- Direction On Section
- Clockwise
- Direction Relative
- Aligned
- Height Grade
- Start1 End1
- Linear Element Road
- A1
- Linear Element Model
- The Network Model
- Linear Element Id
- {82E947A7-0D56-4064-BA0D-43CE06A4064C}
- Linear Element Type
- Other
- From Distance
- 0 m
- To Distance
- 4 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
52.184742 -0.305928 52.184778 -0.305895
Segment 6
3 coordinate pairs- Description
- A421 northbound between A4280 and A1
- Carriageway
- Dual Carriageway
- Lanes Restricted
- 3 lanes restricted
- Operational Lanes
- 0 operational lanes
- 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
- {169DEDDB-B7BE-433C-9960-B2B47F8F1558}
- Linear Element Type
- A Carriageway
- From Distance
- 647 m
- To Distance
- 748 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
52.168468 -0.353327 52.16851 -0.352663 52.168537 -0.351859
Segment 7
4 coordinate pairs- Description
- A421 northbound between A4280 and A1
- Carriageway
- Dual Carriageway
- Lanes Restricted
- 3 lanes restricted
- Operational Lanes
- 0 operational lanes
- 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
- {CFE667C0-B87B-4656-8AA0-8A602629C2FD}
- Linear Element Type
- A Carriageway
- From Distance
- 0 m
- To Distance
- 179 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
52.168537 -0.351859 52.168556 -0.351286 52.168558 -0.350448 52.168574 -0.349233
Segment 8
15 coordinate pairs- Description
- A421 northbound access from A603
- Lanes Restricted
- 1 lane restricted
- Operational Lanes
- 0 operational lanes
- 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
- {67CED0D7-CC4E-492E-951F-A5CB1A126A11}
- Linear Element Type
- A Carriageway Entry Slip
- From Distance
- 5 m
- To Distance
- 384 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
52.124824 -0.419995 52.124841 -0.419914 52.124859 -0.419855 52.124893 -0.419766 52.124937 -0.419677 52.12499 -0.419572 52.125078 -0.419452 52.125555 -0.418793 52.125687 -0.418613 52.125908 -0.418357 52.126572 -0.417574 52.126626 -0.417517 52.126643 -0.417498 52.127166 -0.416939 52.127467 -0.416563
Segment 9
10 coordinate pairs- Description
- A421 northbound within the A603 junction
- Carriageway
- Dual Carriageway
- Lanes Restricted
- 2 lanes restricted
- Operational Lanes
- 0 operational lanes
- 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
- {7E780AE3-A2F3-4BC4-BD6A-A1EB9EC9BAB2}
- Linear Element Type
- A Carriageway
- From Distance
- 0 m
- To Distance
- 378 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
52.124602 -0.419528 52.12477 -0.419317 52.125355 -0.418639 52.125647 -0.418322 52.125895 -0.41805 52.126392 -0.417551 52.126623 -0.417331 52.126854 -0.417111 52.127387 -0.416639 52.127467 -0.416563
Segment 10
7 coordinate pairs- Description
- A421 northbound between A603 and A4280
- Carriageway
- Dual Carriageway
- Lanes Restricted
- 2 lanes restricted
- Operational Lanes
- 0 operational lanes
- 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
- {ABA9F3D5-9098-47DE-85AE-05F4A7F87D8D}
- Linear Element Type
- A Carriageway
- From Distance
- 0 m
- To Distance
- 393 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
52.127467 -0.416563 52.127778 -0.416304 52.127787 -0.416303 52.128277 -0.415921 52.128668 -0.415629 52.12947 -0.41506 52.130728 -0.414358
Segment 11
10 coordinate pairs- Description
- A421 northbound access from A4280
- 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
- A4280
- Linear Element Model
- The Network Model
- Linear Element Id
- {BBC6C434-5FDC-4A15-967D-BE7CE2AEFEF4}
- Linear Element Type
- A Carriageway Entry Slip
- From Distance
- 12 m
- To Distance
- 420 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
52.152247 -0.38592 52.152233 -0.385827 52.152222 -0.385648 52.152269 -0.385461 52.152417 -0.384977 52.152642 -0.38437 52.152931 -0.383668 52.153325 -0.38287 52.153561 -0.382489 52.154363 -0.381219
Segment 12
8 coordinate pairs- Description
- A421 northbound between A4280 and A1
- Carriageway
- Dual Carriageway
- Lanes Restricted
- 3 lanes restricted
- Operational Lanes
- 0 operational lanes
- 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
- {169DEDDB-B7BE-433C-9960-B2B47F8F1558}
- Linear Element Type
- A Carriageway
- From Distance
- 0 m
- To Distance
- 748 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
52.167003 -0.362447 52.167437 -0.360681 52.167749 -0.359084 52.168004 -0.357691 52.168224 -0.356089 52.168422 -0.354041 52.16851 -0.352663 52.168537 -0.351859
Segment 13
11 coordinate pairs- Description
- A421 northbound within the A603 junction
- Carriageway
- Dual Carriageway
- Lanes Restricted
- 2 lanes restricted
- Operational Lanes
- 0 operational lanes
- Direction On Section
- East Bound
- Direction Relative
- Aligned
- Height Grade
- Start1 End2
- Linear Element Road
- A421
- Linear Element Model
- The Network Model
- Linear Element Id
- {540F6133-A809-498D-B2A6-FC398E484295}
- Linear Element Type
- A Carriageway
- From Distance
- 0 m
- To Distance
- 447 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
52.121133 -0.424982 52.121159 -0.424923 52.121378 -0.424491 52.121685 -0.423925 52.121975 -0.423404 52.122276 -0.422882 52.122388 -0.422688 52.122916 -0.421837 52.123189 -0.421433 52.123604 -0.420834 52.123957 -0.420354
Segment 14
7 coordinate pairs- Description
- A421 northbound between A4280 and A1
- Carriageway
- Dual Carriageway
- Lanes Restricted
- 3 lanes restricted
- Operational Lanes
- 0 operational lanes
- 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
- {05A6519F-5185-4F43-A53A-3297F8DA93C8}
- Linear Element Type
- A Carriageway
- From Distance
- 0 m
- To Distance
- 680 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
52.163677 -0.37073 52.16403 -0.370116 52.164972 -0.368181 52.165521 -0.366943 52.165905 -0.365922 52.166418 -0.364441 52.167003 -0.362447
Segment 15
7 coordinate pairs- Description
- A421 northbound between A603 and A4280
- Carriageway
- Dual Carriageway
- Lanes Restricted
- 2 lanes restricted
- Operational Lanes
- 0 operational lanes
- 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
- {D0BF256C-4BD4-4EB3-B7B4-BEFFB5AE0705}
- Linear Element Type
- A Carriageway
- From Distance
- 0 m
- To Distance
- 344 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
52.138623 -0.408149 52.138762 -0.407994 52.139363 -0.407272 52.13954 -0.407046 52.140088 -0.40634 52.140512 -0.405769 52.141041 -0.405014
Segment 16
6 coordinate pairs- Description
- A421 northbound between A603 and A4280
- Carriageway
- Dual Carriageway
- Lanes Restricted
- 2 lanes restricted
- Operational Lanes
- 0 operational lanes
- 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
- {ABA9F3D5-9098-47DE-85AE-05F4A7F87D8D}
- Linear Element Type
- A Carriageway
- From Distance
- 0 m
- To Distance
- 233 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
52.127467 -0.416563 52.127778 -0.416304 52.127787 -0.416303 52.128277 -0.415921 52.128668 -0.415629 52.129369 -0.415132
Segment 17
3 coordinate pairs- Description
- A421 northbound between A4280 and A1
- Carriageway
- Dual Carriageway
- Lanes Restricted
- 3 lanes restricted
- Operational Lanes
- 0 operational lanes
- 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
- {092BBE71-B517-4BBE-949F-D542B5A1A7FB}
- Linear Element Type
- A Carriageway
- From Distance
- 0 m
- To Distance
- 273 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
52.161904 -0.373494 52.162783 -0.372215 52.163677 -0.37073
Segment 18
5 coordinate pairs- Description
- A421 northbound between A600 and A603
- Carriageway
- Dual Carriageway
- Lanes Restricted
- 2 lanes restricted
- Operational Lanes
- 0 operational lanes
- 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
- {CE9F674E-16D0-4D32-B50F-5C29D6247B88}
- Linear Element Type
- A Carriageway
- From Distance
- 577 m
- To Distance
- 744 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
52.120237 -0.426936 52.120311 -0.426764 52.120608 -0.426081 52.120826 -0.425606 52.121133 -0.424982
Segment 19
4 coordinate pairs- Description
- A421 northbound between A4280 and A1
- Carriageway
- Dual Carriageway
- Lanes Restricted
- 3 lanes restricted
- Operational Lanes
- 0 operational lanes
- 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
- {CFE667C0-B87B-4656-8AA0-8A602629C2FD}
- Linear Element Type
- A Carriageway
- From Distance
- 0 m
- To Distance
- 179 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
52.168537 -0.351859 52.168556 -0.351286 52.168558 -0.350448 52.168574 -0.349233
Segment 20
4 coordinate pairs- Description
- A421 northbound within the A603 junction
- Carriageway
- Dual Carriageway
- Lanes Restricted
- 2 lanes restricted
- Operational Lanes
- 0 operational lanes
- Direction On Section
- East Bound
- Direction Relative
- Aligned
- Height Grade
- Start2 End2
- Linear Element Road
- A421
- Linear Element Model
- The Network Model
- Linear Element Id
- {EDA9BAD7-B582-44FD-BD75-8C84593114E0}
- Linear Element Type
- A Carriageway
- From Distance
- 0 m
- To Distance
- 91 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
52.123957 -0.420354 52.124054 -0.420234 52.124089 -0.420189 52.124602 -0.419528
Segment 21
8 coordinate pairs- Description
- A421 northbound between A4280 and A1
- Carriageway
- Dual Carriageway
- Lanes Restricted
- 3 lanes restricted
- Operational Lanes
- 0 operational lanes
- 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
- {10BD84F2-0C28-4FE4-8522-71B850B6E7A9}
- Linear Element Type
- A Carriageway
- From Distance
- 0 m
- To Distance
- 431 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
52.184614 -0.312151 52.184761 -0.311173 52.184896 -0.31004 52.18493 -0.309147 52.184942 -0.308127 52.184876 -0.307238 52.184734 -0.306095 52.184742 -0.305928
Segment 22
18 coordinate pairs- Description
- A421 northbound between A603 and A4280
- Carriageway
- Dual Carriageway
- Lanes Restricted
- 2 lanes restricted
- Operational Lanes
- 0 operational lanes
- 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
- {F3419297-9958-44C5-9BDF-22C24E516D49}
- Linear Element Type
- A Carriageway
- From Distance
- 0 m
- To Distance
- 979 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
52.130728 -0.414358 52.130755 -0.414343 52.131424 -0.413968 52.132379 -0.413409 52.133128 -0.412929 52.133965 -0.412373 52.134147 -0.412235 52.13449 -0.411975 52.135096 -0.411515 52.135451 -0.411225 52.136127 -0.410645 52.13666 -0.410173 52.137246 -0.409597 52.137574 -0.409264 52.138079 -0.408735 52.138611 -0.40816 52.138622 -0.408149 52.138623 -0.408149
Segment 23
10 coordinate pairs- Description
- A421 northbound between A4280 and A1
- Carriageway
- Dual Carriageway
- Lanes Restricted
- 3 lanes restricted
- Operational Lanes
- 0 operational lanes
- 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
- {0DF6F4C3-B339-F51E-C116-04F171D5DBE1}
- Linear Element Type
- A Carriageway
- From Distance
- 0 m
- To Distance
- 792 m
- Gml Srs Name
- EPSG::4326
- Gml Srs Dimension
- 2
Raw coordinate list
52.173428 -0.329495 52.173714 -0.328978 52.173985 -0.328543 52.174883 -0.327156 52.17629 -0.325353 52.176728 -0.324847 52.176731 -0.324843 52.177738 -0.323678 52.178686 -0.322547 52.178954 -0.322234
- Geometry type
- MultiLineString
- Geometry points
- 182
- First coordinate pair
- -0.349233, 52.168574
- Road section segments
- 1
- Road section points
- 182
View geometry JSON
{
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52.168574
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52.168599
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52.168654
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- Cause type
- Construction Work
- Detailed cause
- Road Improvement Or Upgrading
- Compliance
- Mandatory
- Probability
- Probable
- Validity status
- Planned
- Road management
- Carriageway Closures
- Feed provider
- National Highways
- Data source
- Roadworks
- Feed version
- 108
- Record created
- Sun, May 17, 2026 7:17 PM
- Record versioned
- Tue, May 19, 2026 8:44 PM
- Coordinate source
- Geometry
Driving on the A421? See every live closure, roadwork and planned restriction on this road.
A421 live closuresRelated incidents
A1 northbound Wyboston to Buckden carriageway closure
Cleared Roadworks National HighwaysCleared 1 day 11 hours ago
A1 northbound Wyboston to Buckden carriageway closure
A421 eastbound Elstow to Cardington A603 Interchange lane 2 closure
Cleared Roadworks National HighwaysCleared 1 day 15 hours ago
A421 eastbound Elstow to Cardington A603 Interchange lane 2 closure
A421 westbound Approach to Cardington lane 2 closure
Cleared Roadworks National HighwaysCleared 1 day 10 hours ago
A421 westbound Approach to Cardington lane 2 closure
A421 eastbound Elstow to Cardington A603 Interchange lane 2 closure
Cleared Roadworks National HighwaysCleared 1 day 20 hours ago
A421 eastbound Elstow to Cardington A603 Interchange lane 2 closure
A421 eastbound Elstow to Cardington A603 Interchange lane 2 closure
Cleared Roadworks National HighwaysCleared 2 days 20 hours ago
A421 eastbound Elstow to Cardington A603 Interchange lane 2 closure
A421 westbound Approach to Cardington lane 2 closure
Cleared Roadworks National HighwaysCleared 2 days 14 hours ago
A421 westbound Approach to Cardington lane 2 closure