Versions of South Dakota Codified Laws 31-5-21. Mowing of ditches on state trunk highway--Rules--Priority to abutting landowner on LawServer 2023 South Dakota Codified Laws 31-5-21. Mowing of ditches on state trunk highway–Rules–Priority to abutting landowner 2022 South Dakota Codified Laws 31-5-21. Mowing of ditches on state trunk highway–Rules–Priority to abutting landowner 2021 South Dakota Codified Laws 31-5-21. Mowing of ditches on state trunk highway–Rules–Priority to abutting landowner 2019 South Dakota Codified Laws 31-5-21. Mowing of ditches on state trunk highway–Rules–Priority to abutting landowner 2018 South Dakota Codified Laws 31-5-21. Mowing of ditches on state trunk highway–Rules–Priority to abutting landowner 2016 South Dakota Codified Laws 31-5-21. Mowing of ditches on state trunk highway–Rules–Priority to abutting landowner 2014 South Dakota Codified Laws 31-5-21. Mowing of ditches on state trunk highway–Rules–Priority to abutting landowner 2010 South Dakota Laws 31-5-21 – Mowing of ditches on state trunk highway–Rules–Priority to abutting landowner