Flying falsework

A type of falsework used in the erection of large cantilever bridges. It consists of a horizontal truss, lying in the plane of the lower chord, with a set of heavy girders under each of its own chords in order to furnish a bearing for the jacks to work against. Each side of its flying end is hung by two ties, consisting of eye-bars, which are in turn attached to the last subpanel point erected. The rear end of this flying falsework is supported by the pier for the first panel erected and then by the last bottom chord panel point for succeeding panels.