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Planned full closures on England's motorways and major A roads. Most run 20:00–06:00.
1 closure across England on the A421 · tonight · clear filters
The A421 westbound carriageway is closed
from 21:00 until 05:00 tonight — about 56 hours.
You will need another route — the main carriageway is shut.
A421 westbound Black Cat Roundabout to Water End Interchange 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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