If the board determines that a change described in section 468.62 increases the cost of the improvement in excess of the adjusted competitive bid threshold, the work shall be let by bids in the same manner as is provided for the original construction of such improvements.
89 Acts, ch 126, §2
CS89, §468.66
94 Acts, ch 1051, §6; 2006 Acts, ch 1056, §2; 2010 Acts, ch 1091, §3, 4; 2014 Acts, ch 1075, §13; 2015 Acts, ch 51, §8