NORTH DAKOTA HIGHWAYS

North Dakota has two multi-state Interstate highways. I-94 is the west-east interstate, running across the southern third of the state. I-94 has a spur going into the Bismarck/Mandan area (I-194). I-29 runs along the eastern edge of North Dakota. North Dakota makes use of the "Business" Interstate routes as well, in towns along I-94.

Several U.S. highways pass through North Dakota as well. The east-west routes are US-52, US-2, US-10, and US-12 (in order from north to south). The north-south routes are US-85, US-83, US-281, US-81, and historical US-59 (in order from west to east).

Many of North Dakota's state highways have used the same numbers since they were designated in the 1920's and 1930's. Most routes use 1 or 2 digit numbers; the 3-digit route numbers are typically short spurs, with the exception of the multi-state highway 200. There seems to be no specific pattern as to the designation numbers for east-west routes or north-south routes.

The Bureau of Indian Affairs (BIA) runs a highway network on the Indian Reservations of North Dakota. They are mostly numbered sequentially from 1 to 25.