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20Junction

M4 Junction 20 Traffic

Bristol & Almondsbury · M5 Almondsbury · near Chipping Sodbury

M4 J20 at 14:17 on Tuesday 3 November: part closure until 06:00 Sat 5 Dec.

Home › Traffic › Roads › M4 › Junction 20

🚨 Live at M4 J20 right now

Checked 14:17 · auto-refresh
✅Nothing reported at M4 J20 right now.
Planned closures at M4 J20
🛑 Closed now until 06:00 Sat 5 Dec
M4 westbound Jct 20 exit slip road to M5 northbound Jct 15 - carriageway closed
⇅ Both directionsPart closure
Diversion: Diversion via M5 southbound, exit Jct 16 to turn and return M5 northbound.

Straight from National Highways, re-checked every 3 minutes while this page is open.

All live M4 traffic →M4 eastbound →M4 westbound →M4 roadworks →

Is M4 junction 20 closed? Quick answers

Checked 14:17 on Tuesday 3 November 2026.

Is M4 junction 20 closed right now?

No. Nothing is closing the road at M4 junction 20 at 14:17.

Is M4 junction 20 closed tonight?

No full closures. M4 junction 20 stays open tonight (Tue 3 Nov, 18:00 to 06:00). 2 lane or slip road closures are planned: westbound Jct 20 exit slip road to M5 northbound Jct 15 - carriageway closed, since Sun 11 Oct 22:00, until Sat 5 Dec 06:00; and westbound Jct 20 exit slip road to M5 northbound Jct 15 - carriageway closed, since Sun 11 Oct 22:00, until Sat 5 Dec 06:00.

Tonight: every M4 closure ›

Is M4 junction 20 closed this weekend?

No full closures. M4 junction 20 stays open this weekend (Fri 6 Nov 18:00 to Mon 9 Nov 06:00). 2 lane or slip road closures are planned: westbound Jct 20 exit slip road to M5 northbound Jct 15 - carriageway closed, since Sun 11 Oct 22:00, until Sat 5 Dec 06:00; and westbound Jct 20 exit slip road to M5 northbound Jct 15 - carriageway closed, since Sun 11 Oct 22:00, until Sat 5 Dec 06:00.

This weekend: every M4 closure ›

Is there an accident at M4 junction 20 today?

No. No collision has been reported at M4 junction 20 since midnight.

M4 accidents today and yesterday ›

Answers use official data only: the National Highways live incident feed and their planned closure report. A closure is counted here when National Highways name this junction or a stretch that runs through it.

🗺️ Where M4 J20 is

Location from the National Highways junction reference. Nearest towns: Chipping Sodbury, Keynsham.

📍 Heading to… from M4 J20

Places and the junctions they are reached from are kept by our team; distances are measured in a straight line from the junction, not along the road.

⚠️ Collision record on the M4 at J20

79Collisions
1Fatal
5Serious
138Casualties
33
Better than most
Ranked 374 of 556 UK junctions on record · 29 of 49 on the M4

Wider area: counting every road within 3 miles — local streets, A-roads, everything — 945 collisions are on record, 7 of them fatal. That figure follows how built-up the area is, so it is shown for context and is not what the ranking uses.

Department for Transport STATS19 police collision records on the M4 itself, within 2 miles of J20. This is the free summary — the full breakdown by severity, weather, road surface, time of day and individual record is in the blackspot report.

📊 Full collision analysis for M4 J20 → 29 of 49 junctions on the M4 · see where it ranks nationally

❓ M4 J20 — Frequently Asked Questions

Where is M4 junction 20?

M4 J20 is at Bristol & Almondsbury. National Highways signs it as M5 Almondsbury. The nearest town is Chipping Sodbury.

Is there an accident at M4 J20?

No — as of 14:17 National Highways list nothing at M4 J20. This page re-checks their live feed every few minutes, 24 hours a day.

Is M4 junction 20 closed?

Partly — M4 westbound Jct 20 exit slip road to M5 northbound Jct 15 - carriageway closed, until 06:00 Sat 5 Dec (as of 14:17).

How many accidents happen at M4 junction 20?

Police STATS19 records show 79 collisions on the M4 within 2 miles of J20, including 1 fatal and 5 serious. Counting every road in the area, 945 collisions are recorded within 3 miles. That ranks it 374 of 556 UK junctions we hold collision records for.

What is near M4 junction 20?

Within 15 miles of M4 J20: Cribbs Causeway (The Mall) (shopping, Patchway), about 2.5 miles south-west in a straight line; Prince of Wales Bridge (M4) (crossing, Severn Beach), about 6 miles west in a straight line; Ashton Gate (stadium, Bristol), about 8 miles south in a straight line; Badminton Horse Trials (events venue, Badminton), about 12 miles east in a straight line; Bristol Airport (airport, Lulsgate Bottom), about 13 miles south-west in a straight line; Bath (town centre, Bath), about 15 miles south-east in a straight line.

🚨 Live M4 traffic

Live incidents, roadworks and delays for the whole M4, updated every 5 minutes from National Highways.

🚗 M4 live traffic →

↔️ Next junctions

← J19
Bristol & Filton J21
Aust & Severn Beach →

📍 Towns near this junction

Chipping Sodbury 7.6 mi Keynsham 10.1 mi

🔢 All M4 junctions

J1 J2 J3 J4 J4A J4B J5 J6 J7 J8 J10 J11 J12 J13 J14 J15 J16 J17 J18 J19 J20 J21 J22 J23 J23A J24 J25 J25A J26 J27 J28 J29 J30 J32 J33 J34 J35 J36 J37 J38 J39 J40 J41 J42 J43 J44 J45 J46 J47 J48 J49

🆘 Broken down near M4 J20?

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