M4 Junction 21: Awkley Interchange (M48) – Collision Now

Map of M4 Junction 21: Awkley Interchange — M4 Junction 21: Awkley Interchange. Map data © OpenStreetMap contributors. Map drawing © Corporate Ace Limited.

Junction 21 is where the M48 leaves for the original Severn Bridge and Chepstow. It is motorway-to-motorway only. Tockington, Olveston and Almondsbury are the nearest villages. Severn View Services is about three miles north-west on the M48.

If you are taking the old Severn Bridge towards Chepstow, perhaps for a trip into the Wye Valley, this is your junction. This page shows what has been happening here.

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

M4 Junction 21 Now: Accidents, Incidents and Roadworks

M4 serious incident · Collision

The information we are receiving suggests there has been a collision on the M4 eastbound between junctions J20 and J19. It appears to have started at 18:03 (6:03pm). National Highways expects it to clear by 23:04 (11:04pm).

For more information, read here ›

Live traffic news at M4 Junction 21

Incidents and roadworks between Junction 20 and Junction 22 that we are aware of.

M4 eastbound between junctions J20 and J19: collision (RTC)

Active nowIncidentEastbound

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

21:16 (9:16pm)21 Oct 2026reported 6 min ago

Location: M4 eastbound between junctions J20 and J19
Direction: Eastbound
Lanes closed: The hard shoulder is closed
Reason: Collision (RTC)
Schedule: 18:03 (6:03pm) Wed 21 Oct 2026 → 23:04 (11:04pm) Wed 21 Oct 2026

⏳Expected to clear in ~1h 42m HA planned end: 23:04 (11:04pm) Wed 21 Oct 2026

This is the news for Junction 21 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 21

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 J21 in Our Records

Incidents here, last 13 days0none reached us

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

Slowest daytime hour westbound16:00–17:00average 58 mph (typical 46 mph)

Slowest daytime hour eastbound08:00–09:00average 44 mph (typical 53 mph)

No accidents, breakdowns or obstructions at J21 have reached us in the last 13 days. Westbound, traffic has been running faster than its typical speed, even in its slowest daytime hour (16:00). Eastbound, the slowest daytime hour is 08:00, about 9 mph below the typical speed.

Average speed by hour of day at J21

our average, last 13 daysNational Highways’ typical speed

Westbound

Eastbound

Incidents per week at J21

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

Built from our own records of National Highways’ live data for the M4 either side of J21: 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 J21, Awkley Interchange
Roads at this junction M48
Nearest town Bradley Stoke, 2.6 miles south-east
Junction before J20, Almondsbury, about 1.5 miles in a straight line
Junction after J22, Pilning, about 3.6 miles in a straight line

Around M4 Junction 21: Awkley Interchange: Towns and Places on the Map

Map of the area within about 5 miles of M4 Junction 21: Awkley Interchange, showing the towns, villages, roads and places to visit — The area within about 5 miles of M4 Junction 21. Map data © OpenStreetMap contributors. Map drawing © Corporate Ace Limited.

Places on the Map Near M4 Junction 21
Place	What it is	From the junction
Pilning	Railway station	About 2.5 miles west
Jekka's Herb Farm	Attraction	About 3 miles east
Bristol Zoo Project	Attraction	About 3 miles south-west
Moto Severn View Services	Motorway services	About 3 miles north-west
Acton Court	Attraction	About 5 miles east

Junctions Either Side

← J20 All M4 junctions J22 →