State Highways

State Highways are generally primary and secondary roads, sometimes built to Interstate standards, linking cities within a State. Each state is responsible for route numbering and layout meaning routes vary state to state. Our videos use the same titles as our US Highways with the route name first followed by the origin and destination. For example: Ohio State Highway 49 - Dayton - Greenville

Looking for a particular route that isn't in a playlist below? Try searching for it above or try your luck browsing the route listings on the page.

Three digit Interstate Highways are loops or spurs of a mainline Interstate Highway. Even digit highways connect to an Interstate at both termini or form a loop around a location. Odd numbered three digit highways connect to one Interstate and are spur routes.

For example, Interstate 30 - Mile 0 - Mile 7 would be an eastward route. Interstate 15 - Mile 154 - Mile 140 is a north-south route. Routes with non-standard mileage contain directional information in the title.