▁ 8 3 ▁near ▁Sel by . ▁It ▁over laps ▁US ▁ 8 3 ▁for ▁. ▁ ▁After ▁leaving ▁US ▁ 8 3 , ▁it ▁turns ▁due ▁east ▁and ▁sp ends ▁about ▁ ▁as ▁a ▁rural ▁two ▁l ane ▁highway ▁again . ▁A ▁few ▁miles ▁before ▁reaching ▁Aber de en , ▁it ▁becomes ▁an ▁at - grade ▁express way . ▁ ▁After ▁the ▁j unction ▁with ▁U . S . ▁Route ▁ 2 8 1 , ▁it ▁goes ▁back ▁to ▁being ▁two ▁l ane ▁for ▁a ▁few ▁miles ▁through ▁Aber de en ▁and ▁past ▁the ▁Aber de en ▁Regional ▁Airport , ▁before ▁once ▁again ▁becoming ▁a ▁ 4 - lane ▁express way , ▁until ▁ ▁before ▁Wa ub ay . ▁East ▁of ▁Wa ub ay ▁it ▁becomes ▁again ▁an ▁at - grade ▁express way ▁until ▁it ▁meets ▁with ▁Inter state ▁ 2 9 ▁near ▁Sum mit . ▁The ▁speed ▁limit ▁from ▁Aber de en ▁to ▁I - 2 9 ▁is ▁ ▁except ▁through ▁the ▁communities ▁of ▁Gro ton , ▁Web ster ▁and ▁Wa ub ay . ▁From ▁there ▁it ▁heads ▁sout heast ▁, ▁until ▁Mil bank . ▁At ▁Mil bank , ▁it ▁continues ▁east ▁for ▁ 1 2 ▁miles , ▁until ▁it ▁cross es ▁into ▁Minnesota ▁at ▁Big ▁Stone ▁City , ▁just ▁south ▁of ▁Big ▁Stone ▁Lake . ▁The ▁South ▁Dak ota ▁section ▁of ▁US ▁ 1 2 ▁is ▁leg ally ▁defined ▁at ▁South ▁Dak ota ▁C od ified ▁La ws ▁§ ▁ 3 1 ▁April ▁ 1 3 2 . ▁ ▁Minnesota