The Iowa Department of Transportation has presented its preferred design for widening US 30 through Benton County. Interchanges will be added at US 218 and Iowa Route 21. In between these new interchanges, two eastbound lanes will be added to the south of the existing road, which will carry westbound traffic. Part of this segment of US 30 carried the Lincoln Highway.
- Iowa DOT to present preferred Highway 30 four-lane design next week, The Gazette (Cedar Rapids, Iowa), July 5, 2012