Arches are one of the oldest forms of bridges known to man and are still the most common bridge type on the UK road, rail and waterway networks. Despite this, it is surprising to think that their behaviour is probably the least understood.

In the Skewarch research project described a lateral look was taken at an important and ageing element in our infrastructure. The guiding principle was simple: To enhance understanding of behaviour of arch bridges, and in so doing, make a contri- bution to the promotion, protection and sustainability of a valuable heritage. The themes or elements (of innovation) were threefold: An aim to shed new light on behavioural characteristics of structures constructed from materials often as 'old as this hills; the partnership between infrastructure owner, industry and science base; and finally the desire for both preservation and development.

In discussing the skewarch project. the background, structure and research mechanism are outlined. aims and components are set out and the methodology is identified. Key results, conclusions and thoughts on the future along with the benefits the work offers not only in maintaining the arch bridge heritage but adding momentum to the new arch lobby are discussed.

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