M4 Junction 18 Traffic

🚨 Live at M4 J18 right now

Checked 14:17 · auto-refresh

✅Nothing reported at M4 J18 right now.

Planned closures at M4 J18

🛑 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.

🌙 Planned from 21:00 until 06:00 Wed 4 Nov

M4 eastbound Jct 18 to Jct 17 carriageway closure (170/6 to 155/2)

→ EastboundCarriageway closed

Diversion: Diversion via - A46 southbound, A420 eastbound, A350 northbound and rejoin M4 at Jct 17.

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 18 closed? Quick answers

Checked 14:17 on Tuesday 3 November 2026.

Is M4 junction 18 closed right now?

No. Nothing is closing the road at M4 junction 18 at 14:17.

Is M4 junction 18 closed tonight?

Yes. M4 junction 18 has 1 full closure planned tonight (Tue 3 Nov, 18:00 to 06:00): eastbound Jct 18 to Jct 17 carriageway closure (170/6 to 155/2), 21:00 to 06:00. Plus 2 lane or slip road closures. Diversion: Diversion via - A46 southbound, A420 eastbound, A350 northbound and rejoin M4 at Jct 17.

Tonight: every M4 closure ›

Is M4 junction 18 closed this weekend?

Yes. M4 junction 18 has 1 full closure planned this weekend (Fri 6 Nov 18:00 to Mon 9 Nov 06:00): eastbound Jct 18 to Jct 17 carriageway closure (170/6 to 155/2), Fri 21:00 to 06:00. Plus 2 lane or slip road closures. Diversion: Diversion via - A46 southbound, A420 eastbound, A350 northbound and rejoin M4 at Jct 17.

This weekend: every M4 closure ›

Is there an accident at M4 junction 18 today?

No. No collision has been reported at M4 junction 18 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 J18 is

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

📍 Heading to… from M4 J18

This junction is for

Castle Combe Circuit Motorsport · Castle Combe, Wiltshire Reached from M4 J17, J18 · 5.5 miles east in a straight line 🧭 Directions Wiltshire traffic

Also near this junction

Badminton Horse Trials Events venue · Badminton, Gloucestershire 3.5 miles north-east in a straight line 🧭 Directions Gloucestershire traffic

Bath Town centre · Bath, Somerset 8.5 miles south in a straight line 🧭 Directions Somerset traffic

Westonbirt Arboretum Attraction · Tetbury, Gloucestershire 9 miles north-east in a straight line 🧭 Directions Gloucestershire traffic

Cribbs Causeway (The Mall) Shopping · Patchway, Gloucestershire 11 miles west in a straight line 🧭 Directions Gloucestershire traffic

Ashton Gate Stadium · Bristol, Somerset 13 miles west in a straight line 🧭 Directions Somerset traffic

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 J18

30Collisions

1Fatal

1Serious

44Casualties

Among the lowest recorded

Ranked 481 of 556 UK junctions on record · 45 of 49 on the M4

Wider area: counting every road within 3 miles — local streets, A-roads, everything — 207 collisions are on record, 9 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 J18. 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 J18 → 45 of 49 junctions on the M4 · see where it ranks nationally

❓ M4 J18 — Frequently Asked Questions

Where is M4 junction 18?

M4 J18 is at Bath & Tormarton. National Highways signs it as Bath. The nearest town is Chipping Sodbury.

Is there an accident at M4 J18?

No — as of 14:17 National Highways list nothing at M4 J18. This page re-checks their live feed every few minutes, 24 hours a day.

Is M4 junction 18 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 18?

Police STATS19 records show 30 collisions on the M4 within 2 miles of J18, including 1 fatal and 1 serious. Counting every road in the area, 207 collisions are recorded within 3 miles. That ranks it 481 of 556 UK junctions we hold collision records for.

Which places is M4 junction 18 the junction for?

M4 J18 is the junction for Castle Combe Circuit (motorsport, Castle Combe), about 5.5 miles east in a straight line - reached from M4 J17, J18.

What is near M4 junction 18?

Within 15 miles of M4 J18: Badminton Horse Trials (events venue, Badminton), about 3.5 miles north-east in a straight line; Bath (town centre, Bath), about 8.5 miles south in a straight line; Westonbirt Arboretum (attraction, Tetbury), about 9 miles north-east in a straight line; Cribbs Causeway (The Mall) (shopping, Patchway), about 11 miles west in a straight line; Ashton Gate (stadium, Bristol), about 13 miles west 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

← J17
Chippenham & Calne J19
Bristol & Filton →

📍 Towns near this junction

Chipping Sodbury 3.3 mi Corsham 8.1 mi Bath 8.5 mi Keynsham 9.1 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

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