HS2 | New A41 overbridge and 2.6km of road realignment in Aylesbury completed 25 Sep, 2024 Leave a comment 186 Views High Speed 2 (HS2) main works contractor EKFB (Eiffage, Kier, Ferrovial, Bam) has completed a two year project to construct a new overbridge traversing the A41 and realign 2.6km of road in Buckinghamshire.