List of state routes in Alabama

State Route System
State Route System
	Highway markers for SR 3, SR 17, and SR 153
	Map of Alabama State Route System
Highway names
Interstates	Interstate nn (I-nn)
US Highways	U.S. Route nn (US nn)
State	State Route nn (SR nn)
System links
	Alabama State Highway System; Interstate; US; State;

The State Route System in Alabama uses the standard numbering convention: odd numbers signify a north–south state route, and even numbers signify an east–west route. Often more than one route number shares the same roadway, so identifying which route the mile markers are for is often difficult.

In no case does a state route number mirror a U.S. Highway number. As such, the following state routes do not exist: 11, 29, 31, 43, 45, 72, 78, 80, 82, 84, 90, 98, 231, 278, 280, 331, 411, or 431.

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