UMA Geotechnical Construction constructed all eight required permanent soil-nail walls along a roughly 2-mile stretch of the Greensboro Western Loop (Interstate 73) project, but of those eight, Wall 4 dwarfed them all. To be exact, the total project required 76,000 square feet of wall, and 42,000 of it was Wall 4.
UMA was a subcontractor to Colorado-based Flatiron Construction Corp., which North Carolina Department of Transportation (NCDOT) retained to build a 1.5-mile divided highway around Greensboro between Battleground Avenue and Lawndale Drive.