SDCL § 31-10-2: Boundary state highway bridge and bridge defined.

For the purposes of §§ 31-10-2 to 31-10-11, inclusive, the following terms mean:

(1) "Boundary state highway bridge," a highway bridge over a stream, river, or lake on the boundary line between the State of South Dakota and an adjoining state, which bridge is located or to be located on a state highway or an extension of such highway and constitutes or will constitute a connecting link between the state highway system of this state and an adjoining state;

(2) "Bridge," in addition to its ordinary meaning, the term includes the substructure, superstructure, approach spans, approach fills and roadway, right-of-way, and all other items necessary to make such structure complete and accessible to traffic.