Study for new Interchange south of Sioux City


Woodbury County, the cities of Sioux City, Sergeant Bluff and Salix and the Siouxland Initiatve have been in the process of preparing an Interchange Justification Report (IJR) outlining the need for an additional interchange on Interstate 29 south of Sioux City.    The report process is nearing completion.    The consultant for the cities and county has drafted the IJR and an environmental assessment (EA) of the proposed site for the interchange.   The selected location is the northernmost location of the three alternatives discussed during the preliminary informational meeting in 2016.

Iowa DOT announced today that the Federal Highway Administration (FHWA) has approved and signed the Environmental Assessment (EA) for the I-29 Southbridge Interchange, between Sergeant Bluff and Salix in Woodbury County. Approval was dated January 2, 2020. There will be a 30-day comment period for the document in addition to a public hearing to be held in Sergeant Bluff on February 27, 2020.

Copies of the EA are being circulated to the Iowa DOT District Office in Sioux City and appropriate offices within DOT and are available by contacting Shelby Ebel, Iowa DOT Program Planner, Location and Environment Bureau, Ames, Iowa.   You can also view the EA online here: