Plans and specifications for contracts let by the board of township supervisors shall provide that all highway grades shall be not less than twenty feet in width. Source: SL 1911, ch 221 , § 5; RC 1919, § 8554; repealed SL 1919, ch 333 , § 69; re - enacted SDC 1939, § 28.0402. 31-13-5, 31-13-6. Repealed by SL 2002, ch 145 , §§ 1, 2