M4 Junction 13: Chieveley Interchange (A34)

Map of M4 Junction 13: Chieveley Interchange — M4 Junction 13: Chieveley Interchange. Map data © OpenStreetMap contributors. Map drawing © Corporate Ace Limited.

Junction 13 at Chieveley is where the M4 meets the A34, north to Oxford and south to Newbury, Winchester and Southampton. Chieveley Services is at the junction. Newbury is about three and a half miles south. Snelsmore Common Country Park is about a mile and a half south-west.

Lorry drivers heading for Southampton docks, families making for the south coast, and students driving up to Oxford all change road here. If your route uses the A34, start with this page.

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

M4 Junction 13 Now: Accidents, Incidents and Roadworks

Live traffic news at M4 Junction 13

Incidents and roadworks between Junction 12 and Junction 14 that we are aware of.

M4 eastbound lane 1 closure (119/8 to 119/0)

Active nowUpdateEastbound

Time now: Wednesday, 21 October 2026, 21:22 (9:22pm)

20:56 (8:56pm)21 Oct 2026reported 25 min ago

Location: M4 eastbound between J15 and J14
Direction: Eastbound
Lanes closed: Lane closures
Reason: Repair work
Schedule: 20:10 (8:10pm) Wed 21 Oct 2026 → 06:00 (6am) Thu 22 Oct 2026

⏳Expected to clear in ~8h 37m HA planned end: 06:00 (6am) Thu 22 Oct 2026

+ 4 more near Junction 13 - see all the M4 traffic news →

This is the news for Junction 13 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 21:22 (9:22pm) Wed 21 Oct 2026

Live Traffic Speeds at M4 Junction 13

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 J13 in Our Records

Incidents here, last 13 days10 collisions, 1 breakdown or obstruction

Typical time to clear–too few cleared incidents to say yet

Slowest daytime hour westbound06:00–07:00average 62 mph (typical 61 mph)

Slowest daytime hour eastbound07:00–08:00average 64 mph (typical 65 mph)

The one incident we recorded at J13 in the last 13 days was a breakdown or obstruction. In both directions, traffic usually keeps close to its typical speed through the day.

Average speed by hour of day at J13

our average, last 13 daysNational Highways’ typical speed

Westbound

Eastbound

Incidents per week at J13

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

The latest 1 here

Tue 20 Oct, 12:39 (12:39pm) Broken Down Vehicle ✓Reported by National Highways
M4 eastbound between junctions J13 and J12
✓ Cleared after about 103 minutes (1.72 hours)

Built from our own records of National Highways’ live data for the M4 either side of J13: 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.