A beam or "girder" bridge is the simplest and ... notch spreads apart under tension. Pre-stressed concrete is an ideal material for beam bridge construction; the concrete withstands the forces ...

The specimens are three feet wide subassemblies of a three-girder bridge model with various shear studs and diagonal bracing configurations. The concrete slab is 4.5 in. thick with a haunch of 1.06 in ...