State routes are designated highways that are maintained by individual states in the United States. These routes connect various cities, towns, and regions within a state, facilitating local and regional travel. Each state has its own numbering system for these routes, which helps drivers navigate more easily. Typically, state routes are marked with specific signs that include the state name and route number. They can vary in size and capacity, ranging from major highways to smaller roads. State routes play a crucial role in the overall transportation network, linking to interstate highways and local roads.