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A Sustainable Timber Footbridge Complementing an Historic and Sensitive Environment

Our experts explore the path to create a design solution on a highly sensitive site with numerous conflicting demands.

map marker United Kingdom | Wednesday, 22 May 2019
Reading Time : 20 minutes

This article was written in collaboration with WSP Team Leader Stephen Heaney, WSP Technical Director Tony Harris,  and Héctor Beade Pereda of Knight Architects. It was presented at the IABSE Conference Guimarães 2019  in Portugal.

Abstract

This paper discusses the design of a bespoke glulam footbridge on a highly sensitive and challenging site. The bridge was designed by WSP and Knight Architects on behalf of Monmouthshire County Council. The 60m long crossing will provide a safer pedestrian crossing of the River Usk between Llanfoist and Abergavenny. The location presents a myriad of conflicting constraints including flooding, heritage, aesthetics, H&S, and environmental designations. The three-span bridge comprises half-through configuration supported on the abutments at either end and an intermediate pier located in a ‘dry’ shingle bar within the river channel. The primary beams comprise glulam construction and are protected with external architectural timber cladding on each elevation. This paper will focus on the rationale which formed the basis of the design, reviewing key design details as well as addressing the main challenges of the design.

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