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17Junction

M4 Junction 17 Traffic

Chippenham & Calne · Chippenham · near Chippenham

🏁 The junction for Castle Combe Circuit

M4 J17 at 14:17 on Tuesday 3 November: part closure until 06:00 Sat 5 Dec · closure planned from 21:00.

Home › Traffic › Roads › M4 › Junction 17

🚨 Live at M4 J17 right now

Checked 14:17 · auto-refresh
✅Nothing reported at M4 J17 right now.
Planned closures at M4 J17
🛑 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 17 closed? Quick answers

Checked 14:17 on Tuesday 3 November 2026.

Is M4 junction 17 closed right now?

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

Is M4 junction 17 closed tonight?

Yes. M4 junction 17 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 17 closed this weekend?

Yes. M4 junction 17 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 17 today?

No. No collision has been reported at M4 junction 17 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 J17 is

Location from the National Highways junction reference. Nearest towns: Chippenham, Corsham, Calne, Tetbury.

📍 Heading to… from M4 J17

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 J17

59Collisions
2Fatal
7Serious
78Casualties
46
Around the middle
Ranked 301 of 556 UK junctions on record · 24 of 49 on the M4

Wider area: counting every road within 3 miles — local streets, A-roads, everything — 272 collisions are on record, 4 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 J17. 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 J17 → 24 of 49 junctions on the M4 · see where it ranks nationally

❓ M4 J17 — Frequently Asked Questions

Where is M4 junction 17?

M4 J17 is at Chippenham & Calne. National Highways signs it as Chippenham. The nearest town is Chippenham.

Is there an accident at M4 J17?

No — as of 14:17 National Highways list nothing at M4 J17. This page re-checks their live feed every few minutes, 24 hours a day.

Is M4 junction 17 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 17?

Police STATS19 records show 59 collisions on the M4 within 2 miles of J17, including 2 fatal and 7 serious. Counting every road in the area, 272 collisions are recorded within 3 miles. That ranks it 301 of 556 UK junctions we hold collision records for.

Which places is M4 junction 17 the junction for?

M4 J17 is the junction for Castle Combe Circuit (motorsport, Castle Combe), about 4.5 miles south-west in a straight line - reached from M4 J17, J18.

What is near M4 junction 17?

Within 15 miles of M4 J17: Badminton Horse Trials (events venue, Badminton), about 7.5 miles west in a straight line; Westonbirt Arboretum (attraction, Tetbury), about 7.5 miles north-west in a straight line; Avebury (heritage, Avebury), about 13 miles south-east in a straight line; Bath (town centre, Bath), about 14 miles south-west in a straight line; Swindon Designer Outlet (shopping, Swindon), about 14 miles 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

← J16
Swindon & Royal Wootton Bassett J18
Bath & Tormarton →

📍 Towns near this junction

Chippenham 3.7 mi Corsham 6.2 mi Calne 7.3 mi Tetbury 8.7 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 J17?

Car recovery near this junction - local firms you can call direct:

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On a motorway? If you can, get onto the hard shoulder or into an emergency area, leave by the left-hand doors and wait behind the barrier. Stuck in a live lane: stay in the car with your seatbelt on and hazard lights on, and call 999.

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