Winchester Bypass Closures Today
Live road closure data for the Winchester Bypass (M3), Hampshire. Updated Friday, 2 October 2026.
Verified bypass profile
About the Winchester Bypass
This profile identifies the corroborated map reference used for this bypass page. It records the route and mapped location context only; it does not assert a route endpoint, length, owner or current operating status.
- Infrastructure type
- Road bypass
- Road reference
- M3
- Mapped location
- Winchester, Hampshire
- Dataset region
- South East
No active closures on the Winchester Bypass
Sign up for alerts below to be notified when closures are added.
About the Winchester Bypass
The Winchester Bypass forms part of the M3 motorway, routing traffic around the historic cathedral city of Winchester in Hampshire. The bypass connects the M3 to the A34 and A31, providing a strategic route for traffic between London and the south coast. National Highways manages this section of the M3, which is subject to high traffic volumes particularly during summer holiday periods.
The Winchester Bypass is maintained by National Highways. UK-filtered disruption records are supplied through ClearRoute and shown here with available source schedule details.
Areas Near the Winchester Bypass
Road Closures on the Winchester Bypass
Road Closures UK shows all 0 current and planned road closures on the Winchester Bypass, sourced from Street Manager and National Highways. Bypass closures can cause significant disruption to local traffic — each record includes the full permit reference, the promoting organisation, the responsible highway authority, and whether a Temporary Traffic Regulation Order (TTRO) is in place.
Frequently Asked Questions
Get email alerts for Winchester Bypass closures
Be notified when new closures are added on the Winchester Bypass.