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Iowa Primary Road No. 20

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Primary Road No. 20 was the designation of a state highway that ran from the Missouri state line at Keokuk to the Minnesota state line near Cresco. Today, the route is related to the following highways:

  • U.S. Highway 61 between Missouri and Dubuque
  • U.S. Highway 52 (formerly U.S. Highway 55) between Dubuque and Decorah
  • Iowa Highway 9 between Decorah and Cresco
  • Iowa Highway 139 between Decorah and Minnesota

    • References

    Iowa Primary Road No. 20 Wikipedia
    (Text) CC BY-SA