Southbridge IJR Project
Woodbury County, along with its partners, the Iowa Department of Transportation, the cities of Sioux City, Sergeant Bluff and Salix, and The Siouxland Initiative, have started a process to study the need for an additional interchange with Interstate 29 south of the existing Airport/Sergeant Bluff exit at mile point 141 and north of the Port Neal Landing interchange at mile point 135. The proposed Interchange Justification Report (IJR) study will identify the optimum location for a new interchange within these project limits. The proposed interchange will link I-29 with parallel major collectors K25 (Port Neal Road) and K45 (Old Highway 75) west and east of I-29. The proposed location will serve the communities of Sioux City, Sergeant Bluff, and Salix along with industrial areas located within and between corridors.