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A421

A421 Traffic News

A421 Trunk Road · Milton Keynes (M1 J13) → Bedford (A6)
🔍
🟢 A-road Clear 🚨 0 incidents 🚧 224 roadworks · 2 soon ⏱ Updated 3min
25 miles long
Regions: South East, East of England
Home › Traffic › Roads › A421

🚨 Live A421 Incidents & Roadworks

Auto-refresh 3 min
🟢 Clear on the A421 📍 0 incidents · 🚧 224 roadworks
Share A421 status: 💬 📘 X
Closure
A421 eastbound Water End Interchange to Black Cat Roundabout carriageway closure
from 21:00
Tonight
Closure
A421 westbound A6 Marsh Leys to M1 Jct 13 carriageway closure
from 21:00 Sat 26 Sep
Sat 26 Sep
📢
Spotted something on the A421?
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⏰ A421 Traffic by Time of Day

A421 is typically busiest 07:00–09:00 and 17:00–19:00 on weekdays.

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04
08
12
16
20

⚠️ Most Dangerous A421 Junctions

Based on DfT STATS19 police collision records. The A421 has 407 recorded collisions at 6 collision hotspots, involving 592 casualties (7 fatal). Take extra care here.

#1
nr Milton Keynes
137 collisions · 188 casualties · 2 fatal · 25 serious
Severe Blackspot
#2
nr Marston Moretaine
118 collisions · 179 casualties · 2 fatal · 20 serious
Severe Blackspot
#3
nr Buckingham
37 collisions · 61 casualties · 2 fatal · 8 serious
Severe Blackspot
#4
nr Sandy
24 collisions · 42 casualties · 1 fatal · 5 serious
Severe Blackspot
#5
nr Bedford
82 collisions · 111 casualties · 15 serious
Severe Blackspot
#6
nr Brackley
9 collisions · 11 casualties · 5 serious
Blackspot
🔍 See the full A421 collision blackspot map →

🛒 Journey Essentials

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❓ A421 Traffic — Frequently Asked Questions

Q: Is the A421 closed today?

Any A421 closure appears in the live feed above within minutes of National Highways reporting it, including tonight's overnight roadworks closures.

Q: Is there traffic on the A421 today?

The live feed above shows every incident, delay, roadwork and overnight closure on the A421, updated every 5 minutes from National Highways.

Q: What is the worst time to use the A421?

The A421 is typically busiest during morning rush hour (07:00–09:00) and evening rush hour (17:00–19:00) on weekdays.

Q: Are there roadworks on the A421 right now?

There are currently 224 active roadwork schemes on the A421. Check the live feed above for exact locations and durations.

Q: What roads connect to the A421?

The A421 connects to: M1, A6, A428.

📊 A421 Status Summary

0
Active incidents
0
Severe/serious
224
Roadworks
—
Last updated
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ℹ️ A421 Road Details

Length
25 miles
From
Milton Keynes (M1 J13)
To
Bedford (A6)
Type
A-road
AM Rush
07:00–09:00
PM Rush
17:00–19:00

📍 Key A421 Locations

Milton Keynes Bedford

🔗 Roads Connecting to the A421

M1 M1 trafficM1 Motorway Live → A6 A6 trafficA6 Trunk Road Live → A428 A428 trafficA428 Trunk Road Live →

🛣️ A421 Services & Motorway Stops

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🔗 Related Tools

🛣️My Commute — save your route NEW 🚧A421 Roadworks View → 🕵️Was I Affected? Check → 🔄Route Checker Plan → 📋Incident Archive Browse → 🗺️Live Map View →

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Junction

DfT STATS19 police collision records

0
Collisions
0
Fatal
0
Serious
0
Slight
🔍 Full blackspot map →
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