S.D. Codified Laws § 31-14-46
Any person receiving, or having any agreement to receive, a royalty, commission, percentage, or discount upon the contract price of any bridge, or piece of work, or bridge material, and who shall submit his sealed bid thereon with intent to secure the advantage of any competitive bidder, or any two or more persons who shall conspire together with intent to prevent competitive bidding upon any contract authorized by the provisions of this chapter or chapter 31-10, or any officer or agent for any bridge company who shall give, or offer to give, to any public official anything of value for the purpose of influencing such official in awarding any contract authorized by such chapters, or any public official who shall receive or accept anything of value from any officer or agent for any such bridge company, shall be guilty of a Class 6 felony.
SDCL 31-14-46