A40 road closures & live traffic incidents

No live incident closures on the A40 right now, but 3 roadworks are currently in force.

Live A40 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

Cleared

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A40 roadworks in force now

A4020 Oxford Road to A40 Denham Roundabout Westbound Jct 1 Exit Slip Lane 2 Closure

Planned Roadworks National Highways

Hillingdon A40 · Roundabout At M40 J1/A40

Expected to clear in 5 hours 22 minutes

Started 12 Oct 2026, 21:00 Expected clear 13 Oct 2026, 04:00

A4020 Oxford Road to A40 Denham Roundabout Westbound Jct 1 Exit Slip Lane 2 Closure

Category: Road Maintenance

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Contra flow westbound with eastbound closed from Horseshoe Drive

Planned Roadworks National Highways

South Gloucestershire A40 · A40 Eastbound Between A48 And A417 Near Gloucester (West)

Expected to clear in 6 days 21 hours

Started 8 Oct 2026, 20:00 Expected clear 19 Oct 2026, 20:00

contra flow westbound with eastbound closed from Horseshoe Drive

Category: Road Maintenance

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Contra flow westbound with eastbound closed from Horseshoe Drive

Active Roadworks National Highways

South Gloucestershire A40 · A40 Eastbound Between A48 And A417 Near Gloucester (West)

Expected to clear in 2 months 3 weeks

Started 28 Jul 2026, 02:40 Expected clear 4 Jan 2027, 21:00

contra flow westbound with eastbound closed from Horseshoe Drive

Category: Road Maintenance

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Recently cleared on the A40

All live closures A40 closure history