State Route 99 (SR 99) is a 21.914-mile-long (35.267 km) state highway with and east–west direction route in Alabama that intersects with  Athens in Limestone(1.551 mi) county in its southern terminus and  Anderson, Lauderdale(21.914 mi) to the north..
State Route 99 (SR 99) is a 21.914-mile-long (35.267 km) state highway with and east–west direction route in Alabama that intersects with  Athens in Limestone(1.551 mi) county in its southern terminus and  Anderson, Lauderdale(21.914 mi) to the north..