Reconstruction of the existing A421 between M1 J13 at Ridgmont and the Eagle Farm Roundabout south-east of Milton Keynes to provide dual two-lane carriageways. This will finally complete the dual carriageway between Milton Keynes and the M1.
The work will involve reconstruction of two existing overbridges and provision of a new structure to allow a proposed new canal, the Bedford and Milton Keynes Link, to pass under the road.
MKC have announced that preparatory works will commence in September with full construction getting underway early in the new year. More here: https://www.milton-keynes.gov.uk/newsletter/read/membersweekly/2879/133…
Work is under way.
Diversions and closures are listed on the Central Bedfordshire Council website. These include a full weekend closure from Friday 31 May until 6am on Monday 3 June.
With thanks to Thomas Walker for information on this page.