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A421 road closures & live traffic incidents

No live incident closures on the A421 right now, but 1 roadwork is currently in force.

Live A421 updates from National Highways and Traffic Wales: incident closures, roadworks in force, planned closures for the week ahead and recently cleared disruption.

Live incident
Active roadworks
Planned
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A421 roadworks in force now

A421 clockwise Brogborough Roundabout outer ring management

Planned Roadworks National Highways
Aylesbury Vale A421 · Roundabout At M1 J13/A421 (Eastern)

Expected to clear in 2 hours 25 minutes

Started 31 Jul 2026, 21:00 Expected clear 1 Aug 2026, 04:00

A421 clockwise Brogborough Roundabout outer ring management

Category: Road Maintenance
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Recently cleared on the A421

All live closures A421 closure history