Located in the mountains of North Carolina, near Asheville, the U.S. Forest Service required several new pedestrian bridges along trails in the Pisgah and Appalachian National Forests. The purpose of this project was to replace bridges that were destroyed by Hurricane Frances and Ivan in the fall of 2004.
For this project, Armstrong Glen, P.C. provided hydrologic and hydraulic analysis as well as engineering design for pedestrian bridges spanning from 30 feet up to 90 feet. The bridges were designed to have service lives of fifty years.
The proposed improvements included 11 pedestrian bridges. Short-span bridges were constructed from glue-laminated slabs and beams. Long-span bridges were constructed with steel trusses.
Construction cost: $1,200,000.