(Photograph courtesy of WYDOT) By Ben Arndt, P.E., M.ASCE, Richard Johnson, P.E., James Dahill, P.G., Jeff Booher, P.E., and Seth Wittke, P.G. When a section of an earthen embankment under a vital commuter route spectacularly collapsed, engineers and geologists quickly mobilized to rebuild the site. On June 8, 2024, a 70 ft high earthen embankment on Teton Pass between Jackson, Wyoming, and Victor, Idaho, failed catastrophically.