InLine has designed bridges for various applications. The design criteria for landscape type bridges is often governed by aesthetics and can be from wood, concrete or steel. These are outdoor structures and protection against weather is an important design consideration.
For wood bridges, the proper wood species is needed to provide an attractive looking bridge while insuring protection against dry rot. The connection details are important to insure that the code required separation is maintained between the earth and lumber.
Long span pedestrian bridges are commonly prefabricated. Once delivered to the site, they need to be supported by a concrete foundation system. The design of the foundation requires evaluation of the loads to insure the soils can support the loads. The design also needs to outline the seating and connection requirements of the bridge. It is common to anchor one side of the bridge while the other side is restrained side-to-side but allowed to move along it length. This allows for thermal expansion and contraction without damaging the bridge or foundation.
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