State Route 99 (SR 99) is a 21.914-mile-long (35.267 km)
state highway that extends from
Athens in
Limestone County to just northeast of
Anderson in
Lauderdale County. Although it is signed as a north–south highway, most of its route is in an east–west direction.
Route description
The southern terminus of SR 99 is located at an
intersection with
U.S. Route 31 (US 31) in northeast Athens. From this point, the highway travels concurrently with Elm Street in a westerly direction through the city. As it exits the city limits, SR 99 changes routes, becoming an extension of Market Street before heading in a northwesterly trajectory towards
Mount Rozell. From there, it then travels in a westerly direction before terminating at
SR 207 northeast of Anderson.[2]