A421 Closures Tonight and This Week
National Highways lists 9 planned roadworks on the A421 between now and 3 November, 2 of them with a carriageway, slip-road or junction closure. Tonight: 1 closure — A421 both directions Marston Moretaine to M1 Jct13 - carriageway closure for drainage on behalf of National H….
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Planned works on the A421, next two weeks 9
| Road | What | From | To | Delay |
|---|---|---|---|---|
| A1, A1(M), A421, A428 | A1 / A421 both directions Biggleswade to St Neots - carriageway closures, lane closures, narrow lanes, permanent layby closures and diversion routes for construction - bypass/new on behalf of National Highways | Mon 2 Oct 00:00 | Sat 14 Aug 06:00 | Slight (less than 10 mins) |
| A1, A421 | A1/A421 both directions All approaches to Black Cat roundabout - Narrow lanes for bypass construction on behalf of National Highways | Wed 25 Jun 00:01 | Wed 31 Mar 23:59 | Slight (less than 10 mins) |
| A421 | A421 eastbound Renhold to Black Cat roundabout - lane closure for bypass/new on behalf of National Highways | Mon 18 Aug 05:00 | Wed 31 Mar 23:59 | Slight (less than 10 mins) |
| A421 | A421 both directions Marsh Leys to Elstow Jct - diversion route on behalf of Universal Project | Mon 27 Jul 08:00 | Fri 27 Nov 20:00 | Slight (less than 10 mins) |
| A421, A5, M1 | M1 both directions Jct 12 Toddington - entry slip road closures, exit slip road closures, lane closures and diversion routes due to communications works on behalf of National Highways | Mon 17 Aug 21:00 | Fri 12 Feb 05:00 | Moderate (10 - 30 mins) |
| A421 | Closure A421 both directions Marston Moretaine to M1 Jct13 - carriageway closure for drainage on behalf of National Highways | Mon 19 Oct 21:00 | Wed 21 Oct 05:00 | Slight (less than 10 mins) |
| A421, M1 | Closure A421/M1 clockwise Jct 13 Brogborough Roundabout - carriageway closure and diversion routes due to carriageway anti-skid works on behalf of National Highways | Mon 26 Oct 21:00 | Sat 31 Oct 05:00 | Moderate (10 - 30 mins) |
| A421 | A421 westbound Brogborough to Kempston - ipv for sweeping of carriageway on behalf of National Highways | Mon 26 Oct 21:00 | Wed 28 Oct 05:00 | Slight (less than 10 mins) |
| A421 | A421 eastbound Kempston to Brogborough - ipv for sweeping of carriageway on behalf of National Highways | Wed 28 Oct 21:00 | Fri 30 Oct 05:00 | Slight (less than 10 mins) |
Roadworks by road
A1 A1(M) A2 A3 A3(M) A5 A6 A11 A12 A13 A14 A19 A20 A21 A23 A26 A27 A30 A31 A34 A35 A36 A38 A38(M) A40 A41 A42 A43 A45 A46 A47 A49 A50 A52 A55 A56 A57 A58 A59 A61 A62 A63 A64 A66 A69 A74(M) A120 A160 A162 A168 A177 A180 A184 A249 A259 A282 A303 A312 A316 A346 A404 A405 A414 A417 A419 A421 A423 A428 A435 A446 A449 A452 A453 A456 A458 A483 A494 A500 A516 A550 A556 A580 A585 A590 A595 A616 A627(M) A628 A631 A663 A690 A696 A1023 A1033 A1077 A1081 A1089 A1307 A2070 A4097 A4123 A4510 A5036 A5103 A5111 A5117 A5127 A5183 A6055 M1 M2 M3 M4 M5 M6 M11 M18 M20 M23 M25 M26 M27 M32 M40 M42 M45 M48 M50 M53 M54 M55 M56 M57 M58 M60 M61 M62 M65 M66 M67 M69 M180 M271 M602 M606 M621
Driving through roadworks
- Check before you set off — planned works can be cancelled or moved for weather, and incidents are not in this list.
- Follow the signed diversion; satnavs often do not know about overnight closures.
- Keep to the temporary speed limit — average-speed cameras are common in roadworks.
- Broken down in roadworks without a hard shoulder? Hazard lights on, leave by the left if safe, and call 999.
What this page shows, and what it misses
Planned works on the roads National Highways runs in England — motorways and major A roads — from its weekly published roadworks file, for about two weeks ahead. "Closure" means the description mentions a carriageway, slip-road or junction closure; other works are lane closures, speed limits or hard-shoulder closures. Local council roads, Scotland, Wales and unplanned incidents are not included.
Contains public sector information from National Highways licensed under the Open Government Licence v3.0.