As used in this part:

1. (1) “Eligible taxpayer” means a railroad that is classified as a Class II or Class III railroad by the United States Surface Transportation Board; and

2. (2) “Railroad track maintenance expenditures” means gross expenditures for maintenance, reconstruction, or replacement of railroad track, including without limitation roadbed, bridges, industrial leads and side track, and related track structures, to the extent the expenditures are on a railroad track that:

   1. (A) Is located in Arkansas;
   2. (B) Is owned or leased by an eligible taxpayer; and
   3. (C) Existed as of July 28, 2021.