The first project, a subcontract from HK Contractors, involved stabilizing a large cut slope on the Old Gardiner Road Bypass at Mammoth Hot Springs, where 20,000 sq ft of both continuously grouted hollow bar soil nails and solid bar soil nails combined with high-tension Tecco Green mesh were used to stabilize large cut slopes to construct a new road corridor.

The Wyoming Dept. of Transportation awarded the second project, which involved the reconstruction of approximately 120 linear ft of roadway shoulder at the Yellowstone National Park East Entrance Gates. To address this, the team used hollow bar soil nails and shotcrete to rebuild lost shoulder width, with vertical micropiles and riprap for additional scour protection at the toe of the slope.

Photo courtesy GeoStabilization International

This section of Highway 14 had to remain open to tourism. Onsite engineering and testing again allowed the team to modify the design as needed, requiring close collaboration between the design and construction teams.

While the primary focus of the design was on functionality and structural stability, efforts were made to integrate the stabilization elements with the natural surroundings. The high-tension Tecco Green mesh and pinned mesh slope systems provide a green, vegetated appearance that blends with the park environment.

Crews completed the emergency repair on time and within budget in less than four months.