Provision of suitable access for wheelchairs and cyclists is often specified for footbridges. The principal span is often a simply supported one. Structural continuity is therefore less common. However, the access route onto the footbridge is often much different from what is familiar to the designer of a highway bridge: there is no necessity for a gentle horizontal alignment (indeed the preferred route may be sharply at right angles to the span). Features and forms of construction for footbridges Basic requirementsĪccess ramps at Hunslet Moor Footbridge, Leedsįootbridges, like any other bridge, must be long enough to clear the obstacle which is to be crossed and high enough not to interfere with whatever passes beneath the bridge. Within such an organisation the engineer carrying out the design needs to be familiar with the particular requirements for footbridges, their features and construction details.įor the engineer in either of these situations, this article presents guidance on the conceptual design of steel and composite footbridges, to aid the selection of an outline design. Longer span bridges and those which form part of a larger scheme are likely to be designed in detail by a consultant or local authority. However, the engineer supervising the work still needs to be acquainted with the different forms of construction which might be used and to be aware of their advantages and limitations. Many fabricators are able to provide such a package, using methods and details of construction developed to suit their particular fabrication facilities and expertise. However, it is common practice, particularly for smaller bridges, for the detailed design of a footbridge to be included as part of a design and construct package. (Image courtesy of Nusteel Structures Ltd.)Ī fully detailed design can be prepared with other contract documents for pricing by tenderers.
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