Editing Interstate 69 (section)

===Original route===
[[File:Interstate 69 map.png|thumb|right|Map of the original I-69 route]]
A route from I-465 in [[Indianapolis]] northeast via [[Fort Wayne, Indiana|Fort Wayne]] to I-80/I-90 near [[Angola, Indiana|Angola]] was added to the proposed "Interregional Highway System" by the early 1940s. Unlike most of the routes, it was not drawn along an existing [[U.S. Route]] corridor, except north of Fort Wayne (where it used [[U.S. Route 27 in Indiana|US&nbsp;27]]); most of it ran roughly parallel to [[Indiana State Road 9|SR&nbsp;9]] and [[Indiana State Road 37|SR&nbsp;37]].<ref name=PRA-1943>{{cite map |author = Public Roads Administration |url = https://commons.wikimedia.org/wiki/File:Interregional_Highway_plan_ca_1943.jpg |title = Routes of the Recommended Interregional Highway System |date = c. 1943 |scale = Scale not given |location = Washington, DC |publisher = Public Roads Administration |via = [[Wikimedia Commons]] |access-date = February 27, 2016 |archive-date = January 30, 2016 |archive-url = https://web.archive.org/web/20160130235654/https://commons.wikimedia.org/wiki/File:Interregional_Highway_plan_ca_1943.jpg |url-status = live }}</ref> The extension beyond Angola to I-94 near [[Marshall, Michigan]], actually started out as part of what evolved into I-94. On early plans, the Chicago–Detroit route would have replaced [[U.S. Route 112|US&nbsp;112]] (now [[U.S. Route 12 in Michigan|US&nbsp;12]]), splitting from I-80/I-90 at [[South Bend, Indiana|South Bend]].<ref name=PRA-1943/><ref>{{cite map |author = Public Roads Administration |url = https://commons.wikimedia.org/wiki/File:Interregional_Highway_plan_1939.jpg |title = Proposed Interregional Highway System |year = 1939 |scale = Scale not given |location = Washington, DC |publisher = Public Roads Administration |via = Wikimedia Commons |access-date = February 27, 2016 |archive-date = January 2, 2016 |archive-url = https://web.archive.org/web/20160102173240/https://commons.wikimedia.org/wiki/File:Interregional_Highway_plan_1939.jpg |url-status = live }}</ref> By 1947, the route had been shifted north to present I-94, along what was then US&nbsp;12, but the connection to South Bend remained, splitting at [[Kalamazoo, Michigan|Kalamazoo]].<ref>{{cite map |author = Public Roads Administration |url = http://commons.wikimedia.org/wiki/File:Interstate_Highway_plan_August_2,_1947_big_text.jpg |title = National System of Interstate Highways, August 2, 1947 |scale = Scale not given |location = Washington, DC |publisher = Public Roads Administration |via = Wikimedia Commons |access-date = October 25, 2013 |archive-date = October 29, 2013 |archive-url = https://web.archive.org/web/20131029202001/http://commons.wikimedia.org/wiki/File:Interstate_Highway_plan_August_2,_1947_big_text.jpg |url-status = live }}</ref>

The I-69 designation was assigned to the Indianapolis–Angola route in 1957, while the short South Bend–Kalamazoo route became proposed [[Interstate 67|I-67]].<ref>{{cite map |author = Public Roads Administration |url = http://commons.wikimedia.org/wiki/File:Interstate_Highway_plan_August_14,_1957.jpg |title = Official Route Numbering for the National System of Interstate and Defense Highways |date = August 14, 1957 |scale = Scale not given |location = Washington, DC |publisher = Public Roads Administration |via = Wikimedia Commons |access-date = February 27, 2016 |archive-date = November 10, 2012 |archive-url = https://web.archive.org/web/20121110055957/http://commons.wikimedia.org/wiki/File:Interstate_Highway_plan_August_14,_1957.jpg |url-status = live }}</ref> The I-67 designation was shifted east to the US&nbsp;27 corridor by early 1958, eventually being absorbed into the extension of I-69 to I-94 near Marshall which was built in 1967.<ref>{{cite report |author = [[Michigan State Highway Department]] |publisher = Michigan State Highway Department |url = http://nwindianahwys.homestead.com/michiplan.html |archive-url = https://web.archive.org/web/20021016104545/http://nwindianahwys.homestead.com/michiplan.html |title = Recommended Numbering: Interstate Highways in Michigan |date = April 25, 1958 |archive-date = October 16, 2002 |url-status = dead }}</ref><ref>{{cite map |author = Public Roads Administration |url = http://commons.wikimedia.org/wiki/File:Interstate_Highway_plan_June_27,_1958.jpg |title = Official Route Numbering for the National System of Interstate and Defense Highways |date = June 27, 1958 |scale = Scale not given |location = Washington, DC |publisher = Public Roads Administration |via = Wikimedia Commons |access-date = October 25, 2013 |archive-date = October 29, 2013 |archive-url = https://web.archive.org/web/20131029200357/http://commons.wikimedia.org/wiki/File:Interstate_Highway_plan_June_27,_1958.jpg |url-status = live }}</ref> The [[Federal-Aid Highway Act of 1968]] authorized an additional {{convert|1500|mi|km}} of Interstates to be chosen by the FHWA; among Michigan's proposals was a {{convert|156|mi|km|adj=on}} extension of I-69 northeast and east via US&nbsp;27 to [[Lansing, Michigan|Lansing]], [[M-78 (Michigan highway)|M-78]] to [[Flint, Michigan|Flint]], and [[M-21 (Michigan highway)|M-21]] to [[Port Huron, Michigan|Port Huron]].<ref name=argus68>{{cite news |url = https://news.google.com/newspapers?id=tTciAAAAIBAJ&pg=3348,1518663&dq=us+131+freeway&hl=en |title = Highway Additions Requested By State |work = The Owosso Argus-Press |agency = Associated Press |date = November 14, 1968 |page = 7 |access-date = December 5, 2010 |oclc = 9802802 |archive-date = June 7, 2021 |archive-url = https://web.archive.org/web/20210607160522/https://news.google.com/newspapers?id=tTciAAAAIBAJ&pg=3348%2C1518663&dq=us+131+freeway&hl=en |url-status = live }}</ref> However, the FHWA initially only approved the route to [[Interstate 475 (Michigan)|I-475]] in Flint.<ref>{{cite MDOT map|year=1984|inset=Flint}}</ref><ref>{{cite map |author = Federal Highway Administration |url = http://commons.wikimedia.org/wiki/File:Interstate_Highway_plan_October_1,_1970.jpg |title = The National System of Interstate and Defense Highways |date = October 1, 1970 |scale = Scale not given |location = Washington, DC |publisher = Federal Highway Administration |via = Wikimedia Commons |access-date = October 25, 2013 |archive-date = October 29, 2013 |archive-url = https://web.archive.org/web/20131029204744/http://commons.wikimedia.org/wiki/File:Interstate_Highway_plan_October_1,_1970.jpg |url-status = live }}</ref> The continuation to Port Huron was eventually approved in February&nbsp;1987.<ref name=IHShistory>{{cite web |first = Richard |last = Weingroff |date = July 16, 2013 |orig-year = 1998 |url = https://www.fhwa.dot.gov/highwayhistory/data/page01.cfm |title = Part I: History |work = The Dwight D. Eisenhower System of Interstate and Defense Highways |publisher = Federal Highway Administration |access-date = August 18, 2013 |archive-date = June 7, 2021 |archive-url = https://web.archive.org/web/20210607160613/https://www.fhwa.dot.gov/highwayhistory/data/page01.cfm |url-status = live }}</ref> Michigan's {{convert|1241|mi|km|adj=on}} portion of the Interstate Highway System was completed in 1992, when the last piece of I-69 opened southwest of Lansing between I-96 and [[Charlotte, Michigan|Charlotte]].<ref name=completion>{{cite news |url = https://newspaperarchive.com/marshall-chronicle/1992-10-17/page-20?tag=interstate+69&rtserp=tags%2Finterstate-69%3Fpci%3D7&psi=52&py=1992 |title = I-69 Now Open South of Lansing |work = [[Marshall Evening Chronicle]] |agency = Associated Press |page = 20 |oclc = 18110507 |access-date = August 17, 2013 |archive-date = June 7, 2021 |archive-url = https://web.archive.org/web/20210607160437/https://newspaperarchive.com/marshall-chronicle-oct-17-1992-p-20/ |url-status = live }}</ref>