In this Section, two bridge configurations were compared for each of the five bridges studied: a skeleton model and a deck model. The choice for boundary conditions for both configurations was pinned joints at one end and roller joints at the other. The roller joints are restrained from lateral translation, but are free to translate in the longitudinal direction of the bridge. The condition of internal member connections was pinned, that is released to rotate. These choices are not necessarily theoretically correct, but were chosen because it was believed that most designers would select them.