Versions of South Dakota Codified Laws 31-17-15. Township boundary line highways--Cumulative effect of provisions for equalcontribution on LawServer 2023 South Dakota Codified Laws 31-17-15. Township boundary line highways–Cumulative effect of provisions for equalcontribution 2022 South Dakota Codified Laws 31-17-15. Township boundary line highways–Cumulative effect of provisions for equalcontribution 2021 South Dakota Codified Laws 31-17-15. Township boundary line highways–Cumulative effect of provisions for equalcontribution 2019 South Dakota Codified Laws 31-17-15. Township boundary line highways–Cumulative effect of provisions for equalcontribution 2018 South Dakota Codified Laws 31-17-15. Township boundary line highways–Cumulative effect of provisions for equal contribution 2016 South Dakota Codified Laws 31-17-15. Township boundary line highways–Cumulative effect of provisions for equalcontribution 2014 South Dakota Codified Laws 31-17-15. Township boundary line highways–Cumulative effect of provisions for equalcontribution 2010 South Dakota Laws 31-17-15 – Township boundary line highways–Cumulative effect of provisions for equal contribution