Completed in 2006
The pedestrian bridge is part of a regional mixed-use trail in Portland, Oregon metropolitan area.
The structure is formed by a stress ribbon deck of total depth of 0.44 m that is suspended on two inclined arches. Since the stress ribbon anchor blocks are connected to the arch footing by struts, the structure forms a self-anchored system that loads the footing by vertical reactions only.
The deck is suspended on arches via suspenders of a radial arrangement; the steel arches therefore have a funicular shape. The stress ribbon deck is assembled from precast segments and a composite deck slab. In side spans, the segments are strengthened by edge composite girders.
Design: OBEC Consulting Engineers, Eugene, Oregon
Structure length92.0 m
LocationPortland, Oregon, USA
Span length9.1+ 73.8 + 9.1 m
Structure typeArch structure.
Width of the superstructure4.7 m
Scope of work
Jiri Strasky: Conceptual design, detailed static and dynamic analysis.
2007 Steel Bridge Award – Merit. National Steel Bridge Alliance.