Versions of South Dakota Codified Laws 31-5-10. Improvements to trunk system--Manner of advertising for bids--Letting of contract--Rules on LawServer 2023 South Dakota Codified Laws 31-5-10. Improvements to trunk system–Manner of advertising for bids–Letting of contract–Rules 2022 South Dakota Codified Laws 31-5-10. Improvements to trunk system–Manner of advertising for bids–Letting of contract–Rules 2021 South Dakota Codified Laws 31-5-10. Improvements to trunk system–Manner of advertising for bids–Letting of contract–Rules 2019 South Dakota Codified Laws 31-5-10. Improvements to trunk system–Manner of advertising for bids–Letting of contract–Rules 2018 South Dakota Codified Laws 31-5-10. Improvements to trunk system–Manner of advertising for bids–Letting of contract–Rules 2016 South Dakota Codified Laws 31-5-10. Improvements to trunk system–Manner of advertising for bids–Letting of contract–Rules 2014 South Dakota Codified Laws 31-5-10. Improvements to trunk system–Manner of advertising for bids–Letting of contract–Rules 2010 South Dakota Laws 31-5-10 – Improvements to trunk system–Manner of advertising for bids–Letting of contract–Rules