Английская Википедия:1969 Iowa highway renumbering

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Шаблон:Use mdy dates Шаблон:Highway renumbering series On January 1, 1969, the Iowa State Highway Commission, now known as the Iowa Department of Transportation, renumbered several state highways. The changes to the highway system fixed a number of issues: creating continuous route numbers across state lines, removing duplicate route numbers where they were unnecessary, and extending route numbers in some locations. Twenty-six sections of highway were assigned new route numbers, duplicate route numbers were removed on eleven sections, and one route number was extended to another section.

Existing route changes

Шаблон:Routelist rowШаблон:Routelist rowШаблон:Routelist rowШаблон:Routelist rowШаблон:Routelist rowШаблон:Routelist rowШаблон:Routelist bottom

See also

• List of Iowa state highways

Number	Change in length		Southern or western terminus	Northern or eastern terminus	Formed	Removed	Notes
	miШаблон:Efn	km