M1 Junction 15A: Rothersthorpe (A43, A5123)
Junction 15A at Rothersthorpe links the M1 to the A43 for west Northampton and Sixfields, with Northampton Services alongside. The Northamptonshire Ironstone Railway is about a mile north-east and Upton Country Park about a mile and a half north. Swan Valley and Shelfleys are the nearest districts.
West Northampton, Sixfields and the services beside the junction draw residents, football fans and drivers stopping for a break. This page helps them see what is around the junction.
Check this junction now: live M1 speed flow map · latest M1 traffic news · M1 serious incidents · M1 accidents
M1 Junction 15A Now: Accidents, Incidents and Roadworks
Live traffic news at M1 Junction 15A
Incidents and roadworks between Junction 14 and Junction 16 that we are aware of.
Lane 1,2 closure southbound
21:50 (9:50pm)21 Oct 2026reported 11 min ago
- Location
- M1 southbound between J17 and J16
- Direction
- Southbound
- Lanes closed
- Lane closures
- Reason
- Maintenance work
- Schedule
- 20:00 (8pm) Wed 21 Oct 2026 → 06:00 (6am) Thu 22 Oct 2026
Forecast - not confirmed
This is the news for Junction 15A only, not the whole M1. For the rest of the motorway see all the latest M1 traffic news, the overhead signs and the speed limits in force now.
Updated 22:02 (10:02pm) Wed 21 Oct 2026
Live Traffic Speeds at M1 Junction 15A
The speed strip below shows the M1 around this junction, both directions, from National Highways’ live data, checked every five minutes.
Untick all three to see just the speeds. We show the important overhead signs and the mandatory speed limits (red ring); see every overhead sign.
Go to our live M1 traffic speed flow map ›
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 M1 traffic news →Live M1 traffic speed flow map →
M1 J15A in Our Records
The one incident we recorded at J15A in the last 13 days was a collision. In both directions, traffic usually keeps close to its typical speed through the day.
Average speed by hour of day at J15A
Northbound
Southbound
Incidents per week at J15A
The latest 1 here
- Sun 11 Oct, 10:13 (10:13am) Collision ✓Reported by National Highways
M1 southbound between junctions J16 and J15A
✓ Cleared after about 91 minutes (1.52 hours)
Built from our own records of National Highways’ live data for the M1 either side of J15A: 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 M1 J15A, Rothersthorpe
- Roads at this junction A43, A5123
- Nearest town Northampton, 2.8 miles north-east
- Junction before J15, about 2.7 miles in a straight line
- Junction after J16, about 3.3 miles in a straight line
Around M1 Junction 15A: Rothersthorpe: Towns and Places on the Map
| Place | What it is | From the junction |
|---|---|---|
| Northamptonshire Ironstone Railway | Attraction | About 1 mile north-east |
| Upton Country Park | Park or nature reserve | About 1.5 miles north |
| St Matthews Hospital | Hospital | About 4 miles north-east |
| Abington Park Museum | Attraction | About 4 miles north-east |
| Weston Favell Shopping Centre | Shopping | About 5.5 miles north-east |
