M4 Junction 16: Spittleborough (A3102)

Map of M4 Junction 16: Spittleborough — M4 Junction 16: Spittleborough. Map data © OpenStreetMap contributors. Map drawing © Corporate Ace Limited.

Junction 16 is the west Swindon turn, on the A3102, with Royal Wootton Bassett about two miles west. Freshbrook, Grange Park and Woodshaw are beside it. Lydiard House is about a mile north, and Coronation Country Park about a mile and a half west.

West Swindon residents, Royal Wootton Bassett families and drivers delivering to the business parks beside the junction will find the map, the junctions either side and the recent history here.

Check this junction now: live M4 speed flow map · latest M4 traffic news · M4 serious incidents · M4 accidents

M4 Junction 16 Now: Accidents, Incidents and Roadworks

Live traffic news at M4 Junction 16

Incidents and roadworks between Junction 15 and Junction 17 that we are aware of.

M4 both directions Jct 16 to Jct 17 - lane 3 closure

Active nowUpdateBoth directions

Time now: Wednesday, 21 October 2026, 21:29 (9:29pm)

21:28 (9:28pm)21 Oct 2026reported just now

Location: M4 eastbound between J17 and J16
Direction: Both directions
Lanes closed: Lane closures
Reason: Repair work
Schedule: 20:53 (8:53pm) Wed 21 Oct 2026 → 06:00 (6am) Thu 22 Oct 2026

⏳Expected to clear in ~8h 30m HA planned end: 06:00 (6am) Thu 22 Oct 2026

+ 6 more near Junction 16 - see all the M4 traffic news →

This is the news for Junction 16 only, not the whole M4. For the rest of the motorway see all the latest M4 traffic news, the overhead signs and the speed limits in force now.

Updated 21:29 (9:29pm) Wed 21 Oct 2026

Live Traffic Speeds at M4 Junction 16

The speed strip below shows the M4 around this junction, both directions, from National Highways’ live data, checked every five minutes.

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60 mph +50–5930–4915–29under 15

closedM62connecting motorwayA6A road👈M1our site: tap for its map

services, on the side you can reach them

crashincidentqueueroadworksspeed limitspeed shown on the signsstop-startoverhead sign

reported by drivers, which can’t always be relied onconfirmed by National Highways

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Go to our live M4 traffic speed flow map ›

In an emergency call 999. To report a problem on a motorway, call National Highways on 0300 123 5000 (24 hours).

NOTE: The speed flow, overhead sign messages or other information shown on our live traffic speed flow map is updated every few minutes. We cross check the data and aim to provide warnings if there could be a delay or an inaccurate speed reading. There can be occasions, beyond our control, and despite our best efforts where the speed flow could be inaccurate. We cannot therefore guarantee the speed you can expect on any stretch of the motorway is always accurately shown. However we hope you will find our live traffic speed flow map a useful tool in trying to plan your journey. Safe driving.

All the latest M4 traffic news →Live M4 traffic speed flow map →

M4 J16 in Our Records

Incidents here, last 13 days62 collisions, 4 breakdowns or obstructions

Typical time to clear59 minutesthe middle value of 6 cleared

Slowest daytime hour westbound06:00–07:00average 63 mph (typical 63 mph)

Slowest daytime hour eastbound06:00–07:00average 65 mph (typical 65 mph)

Most incidents we recorded at J16 were breakdowns or obstructions; 2 of 6 were collisions. In both directions, traffic usually keeps close to its typical speed through the day.

Average speed by hour of day at J16

our average, last 13 daysNational Highways’ typical speed

Westbound

Eastbound

Incidents per week at J16

collisionsbreakdowns and obstructions* part week: we started recording during it

The latest 5 here

Sun 18 Oct, 15:55 (3:55pm) Collision ✓Reported by National Highways
M4 eastbound between junctions J16 and J15
✓ Cleared after about 24 minutes
Fri 16 Oct, 14:12 (2:12pm) Vehicle Fire ✓Reported by National Highways
M4 eastbound between junctions J17 and J16
✓ Cleared after about 59 minutes
Thu 15 Oct, 13:02 (1:02pm) Tyre Change ✓Reported by National Highways
M4 westbound entry slip at junction J16
✓ Cleared after about 148 minutes (2.47 hours)
Wed 14 Oct, 17:52 (5:52pm) Spillage ✓Reported by National Highways
M4 eastbound between junctions J16 and J15
✓ Cleared after about 9 minutes
Sat 10 Oct, 22:18 (10:18pm) Vehicle Fire ✓Reported by National Highways
M4 westbound between junctions J15 and J16
✓ Cleared after about 425 minutes (7.08 hours)

Built from our own records of National Highways’ live data for the M4 either side of J16: speeds from 13 days of five-minute readings, incidents from the last 13 days (we started recording incidents on 09/10/2026). Each incident is counted once. Updated every five minutes.

Junction M4 J16, Spittleborough
Roads at this junction A3102
Nearest town Royal Wootton Bassett, 2.2 miles west
Junction before J15, Plough Hill Interchange, about 5.7 miles in a straight line
Junction after J17, Stanton St Quintin, about 11.7 miles in a straight line

Around M4 Junction 16: Spittleborough: Towns and Places on the Map

Map of the area within about 5 miles of M4 Junction 16: Spittleborough, showing the towns, villages, roads and places to visit — The area within about 5 miles of M4 Junction 16. Map data © OpenStreetMap contributors. Map drawing © Corporate Ace Limited.

Places on the Map Near M4 Junction 16
Place	What it is	From the junction
Lydiard House	Attraction	About 1 mile north
Coronation Country Park	Park or nature reserve	About 1.5 miles west
Mannington Retail Park	Shopping	About 2 miles east
Broad Town White Horse	Attraction	About 3 miles south
Taw Valley Halt	Railway station	About 3.5 miles north
Coate Water Country Park	Park or nature reserve	About 4.5 miles east
Greenbridge Retail Park	Shopping	About 4.5 miles north-east
Richard Jefferies Museum	Attraction	About 5 miles east