Arizona Historic Roads : State Route 68, Bullhead City to Kingman Highway
Intelligent Transportation Systems in Work Zones: A Case Study: Work Zone Travel Time System: Reducing Congestion with the Use of a Traffic Management Contract Incentive During the Reconstruction of Arizona State Route 68
State Route 95 realignment study : I-40 to SR 68 : location/design concept report and EIS
State Routes 95/68 corridor study
Arizona Highway 688 at Corduroy Creek in Gila County
Sign on Arizona Highway 68