Highways are split into at least four different types of systems in the United States: Interstate Highways, U.S. Highways, state highways, and county...

United States Numbered Highways are components of a national system of highways that is administered by the American Association of State Highway and...

The United States Numbered Highway System (often called U.S. Routes or U.S. Highways) is an integrated network of roads and highways numbered within a...

either numbered or maintained by a sub-national state or province. A road numbered by a state or province falls below numbered national highways (Canada...

primary Interstate Highways in the Interstate Highway System, a network of freeways in the United States. These primary highways are assigned one- or...

controlled-access highways that forms part of the National Highway System in the United States. The system extends throughout the contiguous United States and has...

U.S. Route 366 was the designation for two U.S. Numbered Highways in the United States, both of which were related to U.S. Route 66: U.S. Route 366 (1927–1932)...

Kentucky began a numbered route system in the 1920s. Originally numbered so that odd numbers ran from north to south, increasing to the west and even numbers...

in a statewide system, and are known as State Route X (abbreviated SR X). United States Numbered Highways are labeled US X, and Interstate Highways are...

states. The numbering scheme, announced in March 1940, includes route numbers that reflect United States Numbered Highways that continue south of the...