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Notice of road closures A421 and A4421 May update

Work item: HS2-EKFB-26-1705

Work Item Summary

Project Phase
Phase 1
Region
Oxfordshire
Location
Finmere, Newton Purcell
Worksite Name
A421, A4421
Contractor
EKFB JV
Type of works
Road closure, Road realignment, Traffic management
Estimated Start Date
06/03/2026
Estimated End Date
31/07/2026

What we are doing

We are continuing with our works realigning both roads onto new overbridges.

Location
A421 – Finmere
A4421 – Newton Purcell

Duration
A421
Weekend Road Closures – Saturday 23 May 8:00am to Sunday 24 May 23:59pm

A4421
Weekend Road Closures – Friday 15 May 8:00pm to Monday 18 May 5:30am

Overnight Road Closures – Tuesday 26 May 8:00pm to Saturday 30 May 5:30am

Traffic management (lane closures and/or traffic lights) will remain on both roads when required until summer 2026.

What we are doing
Carrying out utility diversions, establishingconnections, and installing traffic lights.

What to expect
Weekend and overnight road closures and traffic lights.

Please note both roads will not be closed at the same time. We will alternate closures to reduce disruption.

HS2 is undergoing a comprehensive reset to ensure it can be built efficiently and for the lowest reasonable cost. This work is being carried out in stages and will be completed in 2026. We will provide you with updates on the reset and what this means for our plans to build the railway in your area.

Download information relating to these works

Find out more about

If you have a question about HS2 or our works, please contact our HS2 Helpdesk team on 08081 434 434 or email [email protected]