This document provides information about the I-74 Iowa-Illinois Corridor project presented to the Iowa DOT Commission. It discusses the history of bridges across the Mississippi River at this location, outlines the study and planning process for improvements that began in 2000, and presents cost estimates for the preferred alternative which involves replacing the existing bridges with new basket handle true arch twin bridges. The total estimated cost for the Iowa portion of the project is $793.3 million, which will be funded in part by $74.6 million in federal earmarks and $7.2 million in unobligated funds.