A new exit on I-29 about halfway between Sergeant Bluff and Salix is in progress, but construction is a ways off.
KTIV reports the Woodbury County supervisors Tuesday approved money to build the “Southbridge Interchange”. According to a KTIV story from September, it will cost $25 million.
The Federal Highway Administration’s “Finding of No Significant Impact” PDF shows a diagram of the exit (p.8). It will be built between mile markers 138 and 139, just south of 235th Street.
This isn’t the first exit in the area to be built after initial construction of I-29. The Port Neal exit northwest of Salix opened September 11, 1970, according to a 1982 map detailing interstate openings.
Construction is not in the five-year plan. First up on I-29 in Woodbury County is replacing the IA 141 bridge over the interstate at Sloan. Also, the northbound rest area south of Sergeant Bluff will be removed. The southbound rest area was recommended for closure in the DOT’s 2020 plan, but it is of much newer construction.