John Armitage

Technical Director, Ramboll

John Armitage is a Technical Director at Ramboll in Southampton, and Co-Lead of Ramboll’s Global Civil Structures Service Line.  He has worked on new bridges throughout Scotland and the UK during 29 years at Ramboll.

My Speaker Sessions

Wednesday 26 November 2025

10:25

AMIDS Tied Arch Bridge

10:25 - 10:50

  • Innovation through AMIDS tied‑arch concept. Focusing on Ramboll’s AMIDS tied‑arch solution introduced in 2023, featured alongside other major projects like the MTHL and Isle d’Orléans crossings.

  • Structural and geotechnical advantages and efficiency through modern engineering and materials - discussing tied‑arch bridges, horizontal thrusts are contained by a tie chord which reduce the demand on foundations. Ideal for sites with weak soils or constrained abutments. The AMIDS variant emphasizes this advantage in embedded urban or soft-ground settings.

Speakers