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Planned full closures on England's motorways and major A roads. Most run 20:00–06:00.
2 closures in the East of England on the A421 · tonight · clear filters
The A421 eastbound carriageway is closed from 20:00 until 06:00 tonight — about 10 hours.
You will need another route — the main carriageway is shut.
A421 eastbound Water End Interchange to Black Cat Roundabout carriageway closure
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
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🔔 Get told before this happens again Early Warning alerts you the moment the A421 closes or backs up — straight to your phone. Set up →
The A421 eastbound entry slip road is closed from 21:00 until 05:00 tonight — about 8 hours.
The road stays open. You cannot join here — use the next junction.
A421 eastbound Salford Road entry slip road closure
A421 both directions Marston Moretaine to M1 Jct13 - carriageway closure for drainage on behalf of National Highways
National Highways have not published a diversion for this closure. Follow the signs on the road — and if you are driving an HGV, check the route suits your height and weight before committing to it.
💬 Share on WhatsApp All A421 closures More in East of England
🔔 Get told before this happens again Early Warning alerts you the moment the A421 closes or backs up — straight to your phone. Set up →
Source: National Highways daily closure report,
imported twice daily. Closures are subject to change at short notice, especially in poor weather —
always follow the signs on the road.
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