Interstate 15 is a major north-south highway in the western United States, stretching for 1,433.52 miles through 6 states, from San Diego, California to Sweet Grass, Montana. The Interstate was designated in 1957. This is a list of cities and attractions along or near the Interstate, from south to north.
avg. score: 11 of 78 (15%)
required scores: 1, 2, 5, 10, 21