Steel for flexibility : Fire engineering

An arched steel space truss has been used for a high-profile bridge in central France. The paper describes its design and construction. The bridge carries an 11 m wide highway comprising a 1 m wide footway, a two-lane carriageway 6.5 m wide and a 2.5 m wide cattle track , resulting in eccentric traffic loadings. The total length is 86 m between abutments. The main bridge structure consists of a steel tubular arch with a 56 m span between supports. The parabolic elevation has an approximate radius of 59 m.