UMA Geotechnical Construction Inc. (UMA) typically finishes off the soil nail walls it constructs with a
standard shotcrete finish. But sometimes the owner wants a more artistic approach.
That was the case for North Carolina Department of Transportation (NCDOT) on the I-40/I-77 interchange
improvements project in Iredell County. UMA was contracted by Lane Construction to install roughly 45,000
ft2 (4200 m2) of various sized soil nail walls with aesthetically appealing sculpted shotcrete finishes. UMA’s earth retention
work was first required to hold up cuts for widened roadway sections and to facilitate new bridge construction.