Iowa Department of Transportation
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Council Bluffs Interstate System Improvements

Corridor Preservation Zone

The Iowa Department of Transportation (Iowa DOT) implemented a Corridor Preservation Zone (CPZ) for the Council Bluffs Interstate System (CBIS) improvements project on September 20, 2005.

What does this mean?

  • The CPZ is an area where future transportation improvements may occur which would require the acquisition of right-of-way (ROW). Designation of the CPZ allows the Iowa DOT to review building permits, subdivision plats and proposed zoning changes before they are approved by local officials.
  • If the building permits, subdivision plats or zoning changes are not compatible with the Iowa DOT’s proposed improvements, the Iowa DOT may initiate the acquisition process for the said ROW.
  • The CPZ also protects private property owners by providing them with information regarding future transportation improvements that may affect their property.
Click here to view a PDF (389 kb) map of the CPZ for the CBIS improvements project. If you have questions or concerns regarding the CPZ, please contact John Carns of the Iowa DOT.