Pipeline Suspension Bridge

Uintah County, Utah

Anadarko Petroleum Corporation installed an extensive natural gas gathering system in the Natural Buttes Gas Field in Uintah County, Utah. The gathering pipelines were routed and planned to cross a 100’ gulch to eliminate the cost of running the alignment to the head of the drainage and back. A suspension bridge design was chosen as the desired structural support system for the pipeline bridge. Three pipelines were planned to cross the gulch. The design required that all of the installation work be accomplished from the banks of the gulch. The pipe saddles consisted of pipe rollers that allowed the pipelines to be rolled across the supports for the final installation of the pipe casings. The bridge consisted of two A-frame supports at each bank, two 2” suspension cables, (4) concrete deadman foundation anchors, pipe support frames, and a 1” wind stay cable. The final span was 120’, due to the location of the frames on the banks. UELS prepared complete construction documents, materials order lists, and performed construction inspection.