A precariously perched two-lane roadway in Colorado National Monument needed to be widened. The Central Federal Lands office of the Federal Highway Administration designed a mechanically stabilized earth retaining wall to facilitate that widening. In order to work quickly, maintain a small footprint, and work within a limited excavation, the FHWA selected Launched SuperMicropiles™ as the solution for building the foundation to the wall. GeoStabilization International installed the Launched SuperMicropiles™ and met the FHWA goal of a fast solution that would minimize the size of the excavation and provide a permanent foundation support system. Moreover, Launched SuperMicropiles™ also proved to be an economical solution.
A variation of karst sinkhole grouting is the grouting of mined coal seams and workings located below existing infrastructure that exhibit the potential to propagate to the surface and cause sinkholes and/or subsidence.