As used in this chapter:

1. (1) "Bridge" means any structure designed to carry vehicular traffic over or under an obstacle to the normal flow of traffic and including any grade separation, culvert, or approach to a bridge.
2. (2) "Approach" means any part of a road or street which is required to make a bridge a viable part of a county road or city street system but which does not extend more than five hundred (500) feet from the bridge.
3. (3) "Construction" means both construction and reconstruction to a degree that new, supplementary, or substantially improved traffic service is provided and significant geometric or structural improvements are affected.
4. (4) "Cost" means all expenditures required to construct, maintain, or repair a bridge, including engineering, equipment, land acquisition, materials, contracts, and bond interest.

5. (5) "Municipal corporation" means a city or town.

   As added by Acts 1977, P.L.113, SEC.2. Amended by P.L.8-1989, SEC.54; P.L.104-1993, SEC.1.