S.D. Codified Laws § 49-41B-38
In the case of any trans-state transmission facility or transmission facility as defined in this chapter, the Public Utilities Commission shall require any person performing any construction or survey work to furnish an indemnity bond in a reasonable amount, which shall be in lieu of any county or township indemnity bond pursuant to §§ 31-12-43 and 31-13-55. Such bond shall run in favor of, and for the benefit of, such townships, counties, or other governmental entities whose property is crossed by such trans-state transmission facility or transmission facility to insure that any damage beyond normal wear to public roads, highways, bridges, or other related facilities shall be adequately compensated. The form, terms, and conditions of such bond shall be subject to the approval of the Public Utilities Commission.
SDCL 49-41B-38