For my structures class we are designing a pedestrian bridge to span over highway 51, which has peaked my interest as of late. The bridge I am going to design would be a harp bridge emphasizing the large expanse underneath the bridge.  By anchoring the tension members on one side of the road then having the bridge span the width of the highway.  The cables would span from this anchor to the center area of the actual walking path, which then acts as a means to regulate traffic and provide a seating or gathering space.  The actual path will be supported on the bottom by a series of trusses in compression.  On either end of the bridge the paths split turning the walkway into an elongated X.  This would allow for students to traverse to the desired direction of campus they want.  As of now the bridge is more of a Y shape allowing only one means of egress for that half of the bridge.  For those students whom have class over towards Quigley, Woody Hall, or the entire northern side of campus it is not the most direct.  For the side coverings of the bridge so as to protect the traffic below and the pedestrians on top of the structure a system of semi transparent panels with illuminating lights would be used to light the bridge along with a system running along the center area.  There will not be any above coverings like a roof or roof like structure to allow for natural day lighting and to further emphasize the tension members.  The path in which one would walk will also be a system of semi transparent panels allowing a view to the traffic below.