U. S. Highway 85

Fortuna, North Dakota – Colorado
Longest Mileage: 1582
Current Mileage: 866

 

U.S. 85 is one of the original 1926 highways. Its original northern terminus was Ambrose, ND. Its current north to south route travels through 4 states. The route was de-signed in New Mexico in 1991, some signs still remain.

North Dakota – 236 Miles
South Dakota – 140 Miles
Wyoming – 247 Miles
Colorado – 243 Miles
New Mexico – Decommissioned (replaced by I-25)
Texas – Decommissioned (replaced by I-25)