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Roadworks on M27—Planned and active works
Closures / restrictions—Current reports
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SouthboundCheckingLive M27 records
Live dataCheckingNational Highways NTIS
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Route information and related roads
Road details
About the M27
Approximate length27.9 miles
RouteSouthampton – Portsmouth
Western endCadnam
Eastern endPortsmouth
Major areasSouthampton, Fareham, Portsmouth
Key connectionsM271, M3, M275, A27
Connecting roads
M27 planned closures and diversions
M27 services
Motorway services guide →Selected service areas from operator listings. Check the operator for current facilities, access and opening times.
How busy is the M27?
2025 annual average136,437vehicles a day
J3 to J4 · Hampshire
9,437 HGVs a day · 6.9% of traffic
Busiest published count location · both directionsM27 route and junction details
Selected junctions and connections. Check signs for permitted movements and current access.
(M27 J4)
- Connects M3
- Connects M271
- Connects A27, A3, M275
- M275 northbound → M27 eastbound
- M275 northbound → M27 westbound
M27 traffic questions
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Where can I find M27 services?
The services section above lists service areas on the M27.
Where are the delays on the M27?
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