"What happened?"
"The town was bypassed to save ten minutes of driving time."
--Disney/Pixar's "Cars" (2006)

Four-lane highway openings in Iowa by year and month

Credits for this page include Jason Hancock's website, Iowa state maps, newspaper articles, and the Iowa Interstate Completion Map available at the iowainterstate50th.com website (all interstates prior to 1982). Multiple entries in a month are listed in order of specific day of the month if known; italics at the end indicate expected openings. Interstate highways are shown in green, US highways in red, and state highways in blue. This map does not show multilane roads of a primarily urban nature, e.g. old US 218/University Avenue through Waterloo and Cedar Falls.

Early dates and unknowns


1957

1958

1959
1960
1961
1962

1963


1964
1965
1966
1967
1968

1969
1970
1971
1972
1973

1974
1975
1976
1977
1978

1979
1980
1981
1982
1983

1984
1985
1986
1987
1988

1989
1990
1991
1992
1993

1994
1995
1996
1997
1998

1999
2000
2001
2002
2003

2004
2005
2006
2007
2008

2009
2010
2011
2012
2013

2014
2015 2016
2017 (based on DOT five-year plan) 2018
2019
2020
2021

Page created 2/20/06; last updated 12/29/16

To Iowa Highway Ends Annex

To Iowa Highway Ends Index