The U.S. Department of Agriculture, Forest Service, manages about 6,700 trail bridges on National Forest System lands. The Forest Service is continually improving trail bridge design and construction techniques as new materials and new uses for existing materials become available. Bridges are an important feature of many trails, so it is essential to design them based on the desired trail experience (as indicated in the Trail Management Objectives [TMOs]) and for user safety and bridge longevity. Bridge design engineers must consider siting, design details and requirements, routine inspections, and maintenance when designing a structure for sustainability.
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