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Riedener Lech Bridge, Austria

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The Lech River Bridge at Weissenbach, Austria, has a span of 52.6 m and an arch crest of 10.5 m for a 5:1 length to height ratio. The new bridge replaces the older bridge structure that was both in poor condition and had insufficient load-carrying capacity. The total length of the bridge is 65.2 m. The two reinforced concrete arches are positioned outside of the carriageway slab, 10.1 m apart. The 0.4 m thick carriageway slab is hung from the arch by suspension rods. With this system it has been possible to span the river without piers, thus avoiding the expense associated with scour protection to pier bases. The carriageway slab allows sufficient clearance for cycle and cross-country ski tails. With the carriageway positioned at a level one-third of the arch height, a pleasing visual balance is maintained.
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Keywords: Arches; Carriageway slabs; Riedener Lech Bridge (Weissenbach, Austria); Structural design; Suspension rods

Document Type: Research Article

Publication date: 1997-02-01

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    Structural Engineering International (SEI), the quarterly Journal of IABSE, published since 1991, is the leading international journal of structural engineering dealing with all types of structures and materials. SEI offers its readers a unique blend of short profiles on recent structures, and longer, in-depth technical articles on research, development, design, construction and maintenance. Articles are written by practicing engineers and academia from around the world and reflect the high standards of IABSE. IABSE Peer Review stamps are given to papers that have passed through a highly selective review process and demonstrate a significant contribution to the state of structural engineering knowledge.To recognise contributions of the highest quality, an Outstanding Paper Award is presented each year.

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