NCS Consultants, LLC (NCS) was retained by Kimley-Horn and Associates, Inc. (KHA) and the Arizona Department of Transportation (ADOT) to develop geotechnical recommendations for new side-hill fill slopes associated with the widening of the US 60 roadway between County Line and Pinto Valley Road in Gila County, Arizona. The existing side slopes are very steep and marginally stable. The challenge was to perform side-hill widening of these slopes while increasing the factor of safety versus global stability to levels acceptable to ADOT.
