Work Item Summary
- Project Phase
- Phase 1
- Region
- Buckinghamshire
- Location
- A421, A4421
- Contractor
- EKFB JV
- Type of works
- Road closure
- Estimated Start Date
- 20/06/2025
- Estimated End Date
- 28/07/2025
What we are doing
We have recently been working alongside the carriageways on the A4421 and the A421.
Here we will shortly be constructing highway tie ins which will connect to new sections of road and the newly built bridges.
The construction of the new highway will mean some utilities will need to be moved and reinstalled.
To be able to carry this out safely a series of weekend closures will happen, on the A421 and the A4421.
These works are essential to safely open the new section of road later this year.
We apologise for any inconvenience this may cause and thank you for your patience while we complete this work.
To reduce our impact on the local area, the A421 and the A4421 will not be closed at the same time.
We have coordinated our works so that closures will alternate between the two roads.
A421 Upcoming Closures
• 20 to 23 June 2025
• 11 to 14 July 2025
• 18 to 21 July 2025
A4421 Upcoming Closures
• 26 July to 28 July 2025
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]