Editing Interstate 90 (section)

==History==

===Predecessors and establishment===

An east–west controlled access highway to serve the Northern United States was proposed in the early 20th century in several federal government documents, including reports from the [[Bureau of Public Roads]] in the 1930s and 1940s.<ref>{{cite news |last=Miller |first=James N. |date=July 23, 1939 |title=14,000 Mile Super Highway To Speed Transportation |page=3 |work=The Seattle Times}}</ref><ref>{{cite magazine |last=Pfeiffer |first=David A. |date=Summer 2006 |title=Ike's Interstates at 50 |pages=14–18 |url=https://www.archives.gov/publications/prologue/2006/summer/interstates.html |magazine=[[Prologue (magazine)|Prologue]] |publisher=[[National Archives and Records Administration]] |issn=0033-1031 |oclc=321015582 |accessdate=April 11, 2022 |archive-date=March 2, 2011 |archive-url=https://web.archive.org/web/20110302235254/http://archives.gov/publications/prologue/2006/summer/interstates.html |url-status=live }}</ref> The Interstate Highway System was created by the [[Federal-Aid Highway Act of 1956]], which was approved by the [[U.S. Congress]] and signed into law on June 26, 1956.<ref name="FHWA-Urban">{{cite web |last=Weingroff |first=Richard F. |year=2006 |title=Designating the Urban Interstates |url=https://www.fhwa.dot.gov/infrastructure/fairbank.cfm |publisher=Federal Highway Administration |accessdate=November 30, 2021 |archive-date=December 30, 2017 |archive-url=https://web.archive.org/web/20171230231552/https://www.fhwa.dot.gov/infrastructure/fairbank.cfm |url-status=live }}</ref> I-90 was assigned to the northernmost transcontinental route in the system by the [[American Association of State Highway Officials]] in 1957.<ref name="FHWA-1957">{{cite map |author=American Association of State Highway Officials |date=August 14, 1957 |title=Official Route Numbering for the National System of Interstate and Defense Highways |url=https://upload.wikimedia.org/wikipedia/commons/9/9c/Interstate_Highway_plan_August_14%2C_1957.jpg |scale=Scale not given |location=Washington, D.C. |publisher=[[Public Roads Administration]] |via=Wikimedia Commons |accessdate=November 30, 2021 |archive-date=May 3, 2021 |archive-url=https://web.archive.org/web/20210503214401/https://upload.wikimedia.org/wikipedia/commons/9/9c/Interstate_Highway_plan_August_14,_1957.jpg |url-status=live }}</ref><ref>{{cite news |last=Hodenfield |first=G. K. |date=September 26, 1957 |title=New Markers to Dot Super Roads |page=1 |work=[[The Indianapolis News]] |url=https://www.newspapers.com/clip/89671853/new-markers-to-dot-super-roads/ |via=Newspapers.com |accessdate=November 30, 2021 |archive-date=November 29, 2021 |archive-url=https://web.archive.org/web/20211129053729/https://www.newspapers.com/clip/89671853/new-markers-to-dot-super-roads/ |url-status=live }}</ref>

The freeway would travel along existing parts of the [[United States Numbered Highway System]], which was established at the suggestion of the federal government in 1926 to replace the named [[auto trail]]s.<ref>{{cite web |last=Weingroff |first=Richard F. |title=From Names to Numbers: The Origins of the U.S. Numbered Highway System |url=https://www.fhwa.dot.gov/infrastructure/numbers.cfm |work=Highway History |publisher=Federal Highway Administration |accessdate=December 9, 2021 |archive-date=September 1, 2019 |archive-url=https://web.archive.org/web/20190901182531/https://www.fhwa.dot.gov/infrastructure/numbers.cfm |url-status=live }}</ref> Among these auto trails, which were generally designated by private motorist organizations, were the transcontinental [[Yellowstone Trail]] and [[National Parks Highway]], created in the 1910s along the future route of I-90 between Seattle and Boston.<ref>{{cite magazine |last=Westgard |first=A. L. |author-link=A. L. Westgard |date=June 7, 1919 |title=Let's Go: Here Are the Motor Trails from Atlantic to Pacific—and All Points Between |pages=360–361, 379 |magazine=[[The Independent (New York City)|The Independent]] |volume=98 |issue=3678 |oclc=4927591 |url=https://books.google.com/books?id=LvDlAAAAMAAJ&pg=PA360 |via=Google Books |accessdate=December 9, 2021 |archive-date=October 9, 2022 |archive-url=https://web.archive.org/web/20221009233351/https://books.google.com/books?id=LvDlAAAAMAAJ&pg=PA360 |url-status=live }}</ref><ref>{{cite news |last=Burkhart |first=Dan |date=February 17, 1998 |title=Interstate 90 had rough, rutted forerunner |page=8M |work=[[Great Falls Tribune]] |url=https://www.newspapers.com/clip/90281383/interstate-90-had-rough-rutted/ |via=Newspapers.com |accessdate=December 9, 2021 |archive-date=December 9, 2021 |archive-url=https://web.archive.org/web/20211209081242/https://www.newspapers.com/clip/90281383/interstate-90-had-rough-rutted/ |url-status=live }}</ref> The national numbered highways along the corridor included [[U.S. Route 10|US&nbsp;10]] from Seattle to Billings, Montana; [[U.S. Route 87|US&nbsp;87]] from Billings to [[Buffalo, Wyoming]]; [[U.S. Route 16|US&nbsp;16]] from Buffalo to [[Portage, Wisconsin]]; [[U.S. Route 51|US&nbsp;51]] from Portage to [[Rockford, Illinois]] and [[U.S. Route 20|US&nbsp;20]] from Rockford to Boston.<ref>{{cite book |author=Joint Board on Interstate Highways |year=1925 |title=Report of Joint Board on Interstate Highways, October 30, 1925, Approved by the Secretary of Agriculture, November 18, 1925 |chapter=Appendix VI: Descriptions of the Interstate Routes Selected, with Numbers Assigned |pages=50–56 |chapter-url=https://en.wikisource.org/wiki/Report_of_Joint_Board_on_Interstate_Highways_October_30,_1925#48 |location=Washington, D.C. |publisher=[[United States Department of Agriculture]] |id={{OCLC|733875457|55123355|71026428}} |via=[[Wikisource]] |accessdate=December 9, 2021 |archive-date=November 14, 2017 |archive-url=https://web.archive.org/web/20171114145350/https://en.wikisource.org/wiki/Report_of_Joint_Board_on_Interstate_Highways_October_30,_1925#48 |url-status=live }}</ref><ref>{{cite map |author1= [[Bureau of Public Roads]] |author2= [[American Association of State Highway Officials]] |date= November 11, 1926 |title= United States System of Highways Adopted for Uniform Marking by the American Association of State Highway Officials |url= https://commons.wikimedia.org/wiki/File:United_States_System_of_Highways_Adopted_for_Uniform_Marking_by_the_American_Association_of_State_Highway_Officials.jpg |scale= 1:7,000,000 |location= Washington, DC |publisher= [[United States Geological Survey]] |oclc= 32889555 |via= [[Wikimedia Commons]] |accessdate= December 9, 2021 |archive-date= April 13, 2017 |archive-url= https://web.archive.org/web/20170413153913/https://commons.wikimedia.org/wiki/File:United_States_System_of_Highways_Adopted_for_Uniform_Marking_by_the_American_Association_of_State_Highway_Officials.jpg |url-status= live }}</ref>

===Tollways and urban construction===
[[File:Chicago Circle Interchange 2018.jpg|thumb|right|Aerial view of the [[Circle Interchange]] in Chicago during reconstruction in 2018|alt=Aerial view of a major freeway interchange with several flyover ramps set within an urban neighborhood. Several ramps have exposed steel beams and other unfinished surfaces, showing signs of construction activity.]]

Major portions of I-90 in the Midwest and Northeastern states used existing toll roads built by state governments in the 1950s and 1960s. The [[Jane Addams Memorial Tollway|Northwest Tollway]], [[Chicago Skyway]], [[Indiana Toll Road]], [[Ohio Turnpike]], [[New York State Thruway]], and [[Massachusetts Turnpike]] all predate I-90 and were incorporated into the route.<ref>{{cite news |last=Ingraham |first=Joseph C. |date=May 24, 1959 |title=Boston to Chicago: New Section of Thruway Completes Express Route Between Cities |page=XX1 |url=https://www.nytimes.com/1959/05/24/archives/boston-to-chicago-new-section-of-thruway-completes-express-route.html |work=The New York Times |accessdate=December 4, 2021 |archive-date=July 22, 2018 |archive-url=https://web.archive.org/web/20180722095852/https://www.nytimes.com/1959/05/24/archives/boston-to-chicago-new-section-of-thruway-completes-express-route.html |url-status=live }}</ref> This also meant that portions of the route did not adhere to [[Interstate Highway standards]], but they were either deemed adequate or rebuilt to conform by the 1980s.<ref>{{cite news |last=Gough |first=William |date=September 30, 1987 |title=Across the lake in concrete: A ride on new I-90 span bridges a gap in the imagination |page=E1 |work=The Seattle Times}}</ref> The Pennsylvania section was planned in the early 1950s as the "Erie Extension" of the [[Pennsylvania Turnpike]],<ref>{{cite news |last=Snyder |first=Thomas P. |date=September 7, 1953 |title=Turnpike Link to Erie Assured, Survey of Best Route Begins |page=8 |work=[[Pittsburgh Sun-Telegraph]] |url=https://www.newspapers.com/clip/89848370/turnpike-link-to-erie-assured-survey/ |via=Newspapers.com |accessdate=December 1, 2021 |archive-date=October 9, 2022 |archive-url=https://web.archive.org/web/20221009233351/https://www.newspapers.com/clip/89848370/turnpike-link-to-erie-assured-survey/ |url-status=live }}</ref> but was instead completed as a toll-free road in October 1960 with federal funds.<ref>{{cite news |date=October 24, 1960 |title=Erie Throughway Is Scheduled To Be Officially Open Friday |page=3 |work=[[The Titusville Herald]] |url=https://www.newspapers.com/clip/89848487/erie-throughway-is-scheduled-to-be/ |via=Newspapers.com |accessdate=December 1, 2021 |archive-date=December 1, 2021 |archive-url=https://web.archive.org/web/20211201084457/https://www.newspapers.com/clip/89848487/erie-throughway-is-scheduled-to-be/ |url-status=live }}</ref> The completion of the section also allowed for full use of the New York State Thruway, which had been finished three years earlier but ended abruptly at the state line.<ref>{{cite news |last=White |first=William A. |date=October 28, 1960 |title='Dead-End' Thruway Is Opened At Erie |page=4 |work=[[The Pittsburgh Press]] |url=https://www.newspapers.com/clip/89848466/dead-end-thruway-is-opened-at-erie/ |via=Newspapers.com |accessdate=December 1, 2021 |archive-date=December 1, 2021 |archive-url=https://web.archive.org/web/20211201084456/https://www.newspapers.com/clip/89848466/dead-end-thruway-is-opened-at-erie/ |url-status=live }}</ref>

I-90 would use several expressways and tollways in the Chicago area, the earliest of which was the [[Kingery Expressway|Tri-State Expressway]] (now the Kingery Expressway), completed in 1950 and extended into Indiana the following year.<ref>{{cite news |last=Foust |first=Hal |date=October 23, 1950 |title=First Section of Expressway Will Open Nov. 1 |at=sec. 1, p. 14 |work=Chicago Tribune |url=https://www.newspapers.com/clip/90008367/first-section-of-expressway-will-open/ |via=Newspapers.com |accessdate=December 9, 2021 |archive-date=October 9, 2022 |archive-url=https://web.archive.org/web/20221009233352/https://www.newspapers.com/clip/90008367/first-section-of-expressway-will-open/ |url-status=live }}</ref><ref>{{cite news |date=December 14, 1951 |title=Schricker, Stevenson Open Super-Highway Link |page=1 |work=[[The Hammond Times]] |url=https://www.newspapers.com/clip/90008620/schricker-stevenson-open-super-highway/ |via=Newspapers.com |accessdate=December 9, 2021 |archive-date=December 4, 2021 |archive-url=https://web.archive.org/web/20211204085252/https://www.newspapers.com/clip/90008620/schricker-stevenson-open-super-highway/ |url-status=live }}</ref> It was followed by the [[Eisenhower Expressway|Congress Expressway]] in the western suburbs, first opened in 1955, and the Northwest Tollway in 1958.<ref>{{cite news |last=Foust |first=Hal |date=December 10, 1955 |title=Show 4.5 Mile Congress St. Stretch to Be Opened to Traffic Tuesday |at=sec. 1, p. 3 |work=Chicago Tribune |url=https://www.newspapers.com/clip/89957155/show-45-mile-congress-st-stretch-to/ |via=Newspapers.com |accessdate=December 9, 2021 |archive-date=October 9, 2022 |archive-url=https://web.archive.org/web/20221009233352/https://www.newspapers.com/clip/89957155/show-45-mile-congress-st-stretch-to/ |url-status=live }}</ref><ref>{{cite news |date=August 21, 1958 |title=Traffic Rolls on 76 Miles of Tollways |at=sec. 1, p. 1 |work=Chicago Tribune |url=https://www.newspapers.com/clip/89957220/traffic-rolls-on-76-miles-of-tollways/ |via=Newspapers.com |accessdate=December 9, 2021 |archive-date=December 3, 2021 |archive-url=https://web.archive.org/web/20211203112636/https://www.newspapers.com/clip/89957220/traffic-rolls-on-76-miles-of-tollways/ |url-status=live }}</ref> The last section to be completed in Illinois was the toll-free [[Dan Ryan Expressway]], which opened on December 15, 1962, and was described as the "world's widest freeway" at the time.<ref>{{cite news |last=Foust |first=Hal |date=December 16, 1962 |title=Drivers Jam Expressway on First Day |at=sec. 1, p. 1 |work=Chicago Tribune |url=https://www.newspapers.com/clip/90283091/drivers-jam-expressway-on-first-day/ |via=Newspapers.com |accessdate=December 9, 2021 |archive-date=December 9, 2021 |archive-url=https://web.archive.org/web/20211209105701/https://www.newspapers.com/clip/90283091/drivers-jam-expressway-on-first-day/ |url-status=live }}</ref><ref>{{cite news |last=Sullivan |first=Mort J. |date=December 13, 1962 |title=Dan Ryan Expressway Will Open Saturday |page=24 |work=[[Daily Herald (Arlington Heights, Illinois)|Chicago Daily Herald]] |agency=[[United Press International]] |url=https://www.newspapers.com/clip/90283107/dan-ryan-expressway-will-open-saturday/ |via=Newspapers.com |accessdate=December 9, 2021 |archive-date=December 9, 2021 |archive-url=https://web.archive.org/web/20211209105659/https://www.newspapers.com/clip/90283107/dan-ryan-expressway-will-open-saturday/ |url-status=live }}</ref> In 1965, the designation for I-90 was switched with I-94 south of Chicago, which moved it to the tolled Chicago Skyway (completed in 1958);<ref>{{cite map |author=Rand McNally |year=1965 |title=1965 Illinois Official Highway Map |scale=1 inch = 12 miles |location=Springfield |publisher=[[Illinois Division of Highways]] |url=https://apps.dot.illinois.gov/HistoricalMapViewer/Files/1965F_Illinois_Statemap.pdf |at=[https://apps.dot.illinois.gov/HistoricalMapViewer/Files/1965B_Illinois_Statemap.pdf Chicago and Vicinity] inset |access-date=December 9, 2021 |archive-date=November 7, 2021 |archive-url=https://web.archive.org/web/20211107232920/https://apps.dot.illinois.gov/HistoricalMapViewer/Files/1965F_Illinois_Statemap.pdf |url-status=live }}</ref><ref>{{cite news |last=Foust |first=Hal |date=April 17, 1958 |title=A Great Day For Chicago! Skyway Open |at=sec. 1, p. 1 |work=Chicago Tribune |url=https://www.newspapers.com/clip/89957115/a-great-day-for-chicago-skyway-open/ |via=Newspapers.com |accessdate=December 9, 2021 |archive-date=October 9, 2022 |archive-url=https://web.archive.org/web/20221009233351/https://www.newspapers.com/clip/89957115/a-great-day-for-chicago-skyway-open/ |url-status=live }}</ref> the change was requested by the Illinois and Indiana state governments to avoid confusion and provide a continuous toll connection to the Indiana Toll Road,<ref>{{cite web |date=February 27, 1964 |title=An Application From the State Highway Department of Indiana For the Relocation of Interstate Route I-90 |publisher=American Association of State Highway Officials |url=https://grmservices.grmims.com/vsearch/portal/public/na4/aashto/default |via=AASHTO Route Numbering Archive |accessdate=December 9, 2021 |archive-date=October 2, 2020 |archive-url=https://web.archive.org/web/20201002030140/https://grmservices.grmims.com/vsearch/portal/public/na4/aashto/default |url-status=live }}</ref> which had been fully opened in 1956.<ref>{{cite news |date=November 16, 1956 |title=No Fanfare As Final Indiana Toll Link Opens; Semi-Trailer, State Police Car 1st Customers |page=1 |work=The Hammond Times |url=https://www.newspapers.com/clip/90008489/no-fanfare-as-final-indiana-toll-link/ |via=Newspapers.com |accessdate=December 9, 2021 |archive-date=December 4, 2021 |archive-url=https://web.archive.org/web/20211204085317/https://www.newspapers.com/clip/90008489/no-fanfare-as-final-indiana-toll-link/ |url-status=live }}</ref> I-90 was moved onto the Kennedy Expressway in 1977 and its western route was replaced with [[Interstate 290 (Illinois)|I-290]] from Schaumburg to the [[Circle Interchange]] in Chicago.<ref>{{AASHTO minutes |year=1977S |page=5 |accessdate=December 9, 2021}}</ref><ref>{{Illinois road map |year=1979 |inset=Chicago and Vicinity |accessdate=April 11, 2022}}</ref>

The other tolled sections of I-90 were completed in the 1950s by their respective state governments. The {{convert|241|mi|km|adj=mid}} Ohio Turnpike opened to traffic on October 1, 1955, three years after construction began.<ref>{{cite news |last=Cram |first=Winston |date=October 1, 1955 |title=Midnight Ceremony Opens Turnpike; Traffic Swarms On Ohio 'Main Street' |page=1 |work=[[Toledo Blade]] |url=https://news.google.com/newspapers?id=IvZOAAAAIBAJ&sjid=jwAEAAAAIBAJ&pg=6946%2C3406428 |via=[[Google News Archive]] |accessdate=December 9, 2021 |archive-date=December 9, 2021 |archive-url=https://web.archive.org/web/20211209113044/https://news.google.com/newspapers?id=IvZOAAAAIBAJ&sjid=jwAEAAAAIBAJ&pg=6946,3406428 |url-status=live }}</ref> The first segment of the New York Thruway opened in June 1954 and was followed by extensions to Buffalo and the Albany area by the end of the year.<ref>{{cite news |last=Ingraham |first=Joseph C. |date=June 23, 1954 |title=Thruway to Open Officially Today |page=29 |url=https://www.nytimes.com/1954/06/24/archives/thruway-to-open-officially-today-dewey-will-cut-tape-on-first-toll.html |work=The New York Times |accessdate=December 9, 2021 |archive-date=October 9, 2022 |archive-url=https://web.archive.org/web/20221009233352/https://www.nytimes.com/1954/06/24/archives/thruway-to-open-officially-today-dewey-will-cut-tape-on-first-toll.html |url-status=live }}</ref><ref>{{cite news |last=Ingraham |first=Joseph C. |date=October 24, 1954 |title=More Thruway: Newburgh-Utica Link Opens Tuesday, Bringing Pike Within 61 Miles of City |page=X19 |url=https://www.nytimes.com/1954/10/24/archives/more-thruway-newburghutica-link-opens-tuesday-bringing-pike-within.html |work=The New York Times |accessdate=December 9, 2021 |archive-date=December 4, 2021 |archive-url=https://web.archive.org/web/20211204103347/https://www.nytimes.com/1954/10/24/archives/more-thruway-newburghutica-link-opens-tuesday-bringing-pike-within.html |url-status=live }}</ref> It was extended to the Pennsylvania state line in 1957 and to the Massachusetts Turnpike via the Berkshire Connector in 1959.<ref>{{cite news |date=December 15, 1957 |title=The Thruway Becomes the Longest Toll Road |page=159 |url=https://www.nytimes.com/1957/12/15/archives/the-thruway-becomes-the-longest-toll-road-on-schedule.html |work=The New York Times |accessdate=December 9, 2021 |archive-date=October 9, 2022 |archive-url=https://web.archive.org/web/20221009233352/https://www.nytimes.com/1957/12/15/archives/the-thruway-becomes-the-longest-toll-road-on-schedule.html |url-status=live }}</ref><ref>{{cite news |last=Weaver |first=Warren Jr. |date=May 27, 1959 |title=Thruway Opened to New England |page=20 |url=https://www.nytimes.com/1959/05/27/archives/thruway-opened-to-new-england-governor-rides-half-moon-in-symbolic.html |work=The New York Times |accessdate=December 9, 2021 |archive-date=December 4, 2021 |archive-url=https://web.archive.org/web/20211204103847/https://www.nytimes.com/1959/05/27/archives/thruway-opened-to-new-england-governor-rides-half-moon-in-symbolic.html |url-status=live }}</ref> The Berkshire section linked with the Massachusetts Turnpike, which had opened in 1957 from the state line to Newton, a distance of {{convert|123|mi|km}}.<ref>{{cite news |last=Ingraham |first=Joseph C. |date=May 12, 1957 |title=Bay State's Turnpike Link |page=XX3 |url=https://www.nytimes.com/1957/05/12/archives/bay-states-turnpike-link-opening-of-massachusetts-highway-this-week.html |work=The New York Times |accessdate=December 4, 2021 |archive-date=October 9, 2022 |archive-url=https://web.archive.org/web/20221009233352/https://www.nytimes.com/1957/05/12/archives/bay-states-turnpike-link-opening-of-massachusetts-highway-this-week.html |url-status=live }}</ref> The turnpike was extended into Boston in two stages: first by {{convert|9|mi|km}} from Newton to [[Allston, Boston|Allston]] in September 1964;<ref>{{cite news |last=Plotkin |first=A. S. |date=September 4, 1964 |title=Hot Debate Preceded Building of Toll Link |page=12 |work=The Boston Globe |url=https://www.newspapers.com/clip/90009720/hot-debate-preceded-building-of-toll/ |via=Newspapers.com |accessdate=December 4, 2021 |archive-date=December 4, 2021 |archive-url=https://web.archive.org/web/20211204110924/https://www.newspapers.com/clip/90009720/hot-debate-preceded-building-of-toll/ |url-status=live }}</ref> and finally with an extension to I-93 near [[South Station (Boston)|South Station]] in Downtown Boston that opened on February 18, 1965.<ref>{{cite news |last=Hanron |first=Robert B. |date=February 19, 1965 |title=East-West Gateway Swings Open; 60 M.P.H. Through Boston... |page=1 |work=The Boston Globe |url=https://www.newspapers.com/clip/90009765/east-west-gateway-swings-open/ |via=Newspapers.com |accessdate=December 4, 2021 |archive-date=December 4, 2021 |archive-url=https://web.archive.org/web/20211204110924/https://www.newspapers.com/clip/90009765/east-west-gateway-swings-open/ |url-status=live }}</ref>

===Non-tolled construction===
[[File:I 90 Montana Construction sign.png|thumb|right|Construction sign on a section of I-90 in Montana|alt=Black-and-white photograph of a sign with the I-90 shield announcing "Interstate Highway Construction Next 12 Miles" with a recommended speed limit of 35 miles per hour.]]

The freeway also incorporated other non-tolled expressway bypasses planned by state governments in the early 1950s and modified to meet Interstate standards. A bypass of Spokane Valley, Washington, opened in November 1956 as the first section in Washington and was extended into neighboring Spokane two years later.<ref>{{cite news |last=Dieffenbach |first=Al |date=November 16, 1961 |title=Freeway is Five: Traffic Benefits Are Listed |page=1 |work=[[Spokane Daily Chronicle]] |url=https://www.newspapers.com/clip/89848854/freeway-is-five-traffic-benefits-are/ |via=Newspapers.com |access-date=December 9, 2021 |archive-date=December 1, 2021 |archive-url=https://web.archive.org/web/20211201094407/https://www.newspapers.com/clip/89848854/freeway-is-five-traffic-benefits-are/ |url-status=live }}</ref> Wisconsin opened their first section in November 1959, connecting the terminus of the Illinois Tollway with Janesville,<ref>{{cite news |last=Foust |first=Hal |date=November 25, 1959 |title=Opens 18 Miles of Interstate Expressway |at=sec. 1, p. 8 |work=Chicago Tribune |url=https://www.newspapers.com/clip/89956670/opens-18-miles-of-interstate-expressway/ |via=Newspapers.com |accessdate=December 9, 2021 |archive-date=December 3, 2021 |archive-url=https://web.archive.org/web/20211203102613/https://www.newspapers.com/clip/89956670/opens-18-miles-of-interstate-expressway/ |url-status=live }}</ref> and extended the freeway through the Madison area to Wisconsin Dells in 1962.<ref>{{cite news |last=Foust |first=Hal |date=November 3, 1962 |title=Expressway From Chicago to Dells Open |at=sec. 1, p. 16 |work=Chicago Tribune |url=https://www.newspapers.com/clip/89956704/expressway-from-chicago-to-dells-open/ |via=Newspapers.com |accessdate=December 9, 2021 |archive-date=December 3, 2021 |archive-url=https://web.archive.org/web/20211203102847/https://www.newspapers.com/clip/89956704/expressway-from-chicago-to-dells-open/ |url-status=live }}</ref> The Cleveland Innerbelt opened in stages from 1959 to 1962 and was originally planned to connect with the [[Parma Freeway]], which would have carried I-90 around the northwest side of [[Downtown Cleveland]]. It was later cancelled in the 1960s amid [[Freeway revolt|public opposition]].<ref>{{cite encyclopedia |date=May 11, 2018 |title=Innerbelt Freeway |url=https://case.edu/ech/articles/i/innerbelt-freeway |encyclopedia=[[Encyclopedia of Cleveland History]] |publisher=[[Case Western Reserve University]] |accessdate=December 9, 2021 |archive-date=December 4, 2021 |archive-url=https://web.archive.org/web/20211204093234/https://case.edu/ech/articles/i/innerbelt-freeway |url-status=live }}</ref><ref>{{cite news |last=Grant |first=Alison |date=May 6, 2015 |title=Big Creek bike-pedestrian greenway eyed for vicinity of abandoned 'Parma Freeway' |url=https://www.cleveland.com/metro/2015/05/big_creek_bike-pedestrian_gree.html |work=The Plain Dealer |accessdate=December 9, 2021 |archive-date=December 10, 2021 |archive-url=https://web.archive.org/web/20211210033137/https://www.cleveland.com/metro/2015/05/big_creek_bike-pedestrian_gree.html |url-status=live }}</ref> The first Minnesota section, built to bypass Austin, began construction in 1957 and opened in 1961.<ref>{{cite news |date=October 2, 1957 |title=Road Construction Near Austin Part of East-West Belt Route |page=6B |work=The Minneapolis Star |url=https://www.newspapers.com/clip/90281922/road-construction-near-austin-part-of/ |via=Newspapers.com |accessdate=December 9, 2021 |archive-date=October 9, 2022 |archive-url=https://web.archive.org/web/20221009233353/https://www.newspapers.com/clip/90281922/road-construction-near-austin-part-of/ |url-status=live }}</ref><ref>{{cite news |date=November 9, 1961 |title=Beltline at Austin Opened |page=10 |work=[[Winona Daily News]] |agency=Associated Press |url=https://www.newspapers.com/clip/89956300/beltline-at-austin-opened/ |via=Newspapers.com |accessdate=December 9, 2021 |archive-date=December 3, 2021 |archive-url=https://web.archive.org/web/20211203092821/https://www.newspapers.com/clip/89956300/beltline-at-austin-opened/ |url-status=live }}</ref>

[[Wisconsin]] was among the first states to complete its rural Interstate system and opened its final section of I-90, from La Crosse to Tomah, in November 1969.<ref>{{cite news |date=October 22, 2009 |title=I-94 segment observes 50th anniversary |url=https://www.republicaneagle.com/news/i-94-segment-observes-50th-anniversary/article_c2b87d1b-b474-5d7c-b857-88f4ca6455ac.html |work=[[Red Wing Republican Eagle]] |accessdate=December 9, 2021 |archive-date=October 9, 2022 |archive-url=https://web.archive.org/web/20221009233353/https://www.republicaneagle.com/news/i-94-segment-observes-50th-anniversary/article_c2b87d1b-b474-5d7c-b857-88f4ca6455ac.html |url-status=live }}</ref><ref>{{cite news |last=Wolski |first=Wayne |date=November 4, 1969 |title=I-90 Rites Open 4-Laner To Area |page=1 |work=La Crosse Tribune |url=https://www.newspapers.com/clip/89956768/i-90-rites-open-4-laner-to-area/ |via=Newspapers.com |accessdate=December 9, 2021 |archive-date=December 3, 2021 |archive-url=https://web.archive.org/web/20211203102938/https://www.newspapers.com/clip/89956768/i-90-rites-open-4-laner-to-area/ |url-status=live }}</ref> The section around Albany, New York, built as a toll-free alternative to the New York Thruway, was completed in 1976 with a connection to the Berkshire Connector, which had been originally intended to carry the I-90 designation across the Hudson River.<ref>{{cite web |year=1977 |title=New York State Department of Transportation Annual Report, 1976 |page=7 |url=https://nysl.ptfs.com/data/Library1/Library1/pdf/1760149_1976.pdf |publisher=[[New York State Department of Transportation]] |via=[[New York State Library]] |accessdate=December 9, 2021 |archive-date=October 9, 2022 |archive-url=https://web.archive.org/web/20221009233354/https://nysl.ptfs.com/aw-server/rest/product/purl/NYSL/s/ba9fa552-d3d2-4ebe-889d-367b1a1adfbb |url-status=live }}</ref><ref>{{cite news |last=O'Brien |first=Tim |date=March 25, 2010 |title=Thruway connector's name spurs question |url=http://blog.timesunion.com/gettingthere/thruway-connectors-name-spurs-question/697/ |work=Times Union |url-status=dead |archive-url=https://web.archive.org/web/20160213195904/http://blog.timesunion.com/gettingthere/thruway-connectors-name-spurs-question/697/ |archive-date=February 13, 2016 |accessdate=December 9, 2021}}</ref> South Dakota completed its final section in November 1976, which created an unbroken stretch of four-lane highway from the Wyoming state line to Boston but some intersections remained.<ref>{{cite news |date=November 19, 1976 |title=I-90 ceremony to be held near Spearfish |page=5 |work=[[Mitchell Daily Republic]] |url=https://www.newspapers.com/clip/89956130/i-90-ceremony-to-be-held-near-spearfish/ |via=Newspapers.com |accessdate=December 9, 2021 |archive-date=December 3, 2021 |archive-url=https://web.archive.org/web/20211203092825/https://www.newspapers.com/clip/89956130/i-90-ceremony-to-be-held-near-spearfish/ |url-status=live }}</ref> The Minnesota segment of I-90 was declared complete in September 1978 with a dedication at Blue Earth, where a golden line was painted to emulate the [[golden spike]] of the [[first transcontinental railroad]].<ref>{{cite news |last=Coleman |first=Nick |date=September 24, 1978 |title=Blue Earth puts Golden Spike in Interstate 90 |pages=[https://www.newspapers.com/clip/89956184/blue-earth-puts-golden-spike-in/ 1A], [https://www.newspapers.com/clip/89956211/blue-earth-puts-golden-spike-in/ 16A] |work=[[Minneapolis Tribune]] |url=https://www.newspapers.com/clip/89956184/blue-earth-puts-golden-spike-in/ |via=Newspapers.com |accessdate=December 9, 2021 |archive-date=December 3, 2021 |archive-url=https://web.archive.org/web/20211203092818/https://www.newspapers.com/clip/89956184/blue-earth-puts-golden-spike-in/ |url-status=live }}</ref> Two months later, Ohio finished its last section west of Cleveland.<ref>{{cite news |last=Hosie |first=Ron |date=November 4, 1978 |title=Heckler draws retort from Rhodes |page=3 |work=[[Dayton Daily News]] |url=https://www.newspapers.com/clip/90008915/heckler-draws-retort-from-rhodes/ |via=Newspapers.com |accessdate=December 9, 2021 |archive-date=October 9, 2022 |archive-url=https://web.archive.org/web/20221009233912/https://www.newspapers.com/clip/90008915/heckler-draws-retort-from-rhodes/ |url-status=live }}</ref>

The western states were the last to complete their segments of I-90. Wyoming opened its final section, from the Montana state line to Sheridan, in July 1985 and dedicated it three months later following the completion of Montana's cross-border section.<ref>{{cite news |last=Thackeray |first=Lorna |date=October 10, 1985 |title=Governors plan Interstate 90 christening |page=2B |work=[[The Billings Gazette]] |url=https://www.newspapers.com/clip/90333934/governors-plan-interstate-90-christening/ |via=Newspapers.com |accessdate=December 9, 2021 |archive-date=December 10, 2021 |archive-url=https://web.archive.org/web/20211210064837/https://www.newspapers.com/clip/90333934/governors-plan-interstate-90-christening/ |url-status=live }}</ref> The last two-lane section in Montana, near [[Springdale, Montana|Springdale]], was widened to four lanes in May 1987.<ref>{{cite news |date=May 14, 1987 |title=I-90 finally done |page=9A |work=Great Falls Tribune |agency=Associated Press |url=https://www.newspapers.com/clip/89956022/i-90-finally-done/ |via=Newspapers.com |accessdate=December 9, 2021 |archive-date=October 9, 2022 |archive-url=https://web.archive.org/web/20221009233910/https://www.newspapers.com/clip/89956022/i-90-finally-done/ |url-status=live }}</ref><!-- several sections in Montana remained an undivided highway until reconstruction in the 1990s.{{cn|date=December 2021}}--> One of the last rural sections of I-90 to be built was through [[Wallace, Idaho]], which placed its downtown on the [[National Register of Historic Places]] in 1976 to prevent its demolition for the freeway. The {{convert|1.5|mi|km|adj=mid}} elevated freeway bypassed Wallace to the north and cost $42&nbsp;million (equivalent to ${{Inflation|US-GDP|42|1991}}&nbsp;million in {{Inflation-year|US-GDP}} dollars){{inflation-fn|US-GDP}} to construct. It opened on September 5, 1991, and the city ceremonially retired the last [[traffic signal|stoplight]] on I-90 a week later.<ref>{{cite news |last=Devlin |first=Sherry |date=September 8, 1991 |title=No Stopping Now |page=E1 |work=The Missoulian |url=https://www.newspapers.com/clip/90334418/no-stopping-now/ |via=Newspapers.com |accessdate=December 9, 2021 |archive-date=December 10, 2021 |archive-url=https://web.archive.org/web/20211210064843/https://www.newspapers.com/clip/90334418/no-stopping-now/ |url-status=live }}</ref><ref>{{cite news |last=Free |first=Cathy |date=September 15, 1991 |title=Engineer pleased with his Wallace freeway 'work of art' |page=B3 |work=The Spokesman-Review |url=https://www.newspapers.com/clip/89735440/engineer-pleased-with-his-wallace/ |via=Newspapers.com |accessdate=November 28, 2021 |archive-date=October 9, 2022 |archive-url=https://web.archive.org/web/20221009233910/https://www.newspapers.com/clip/89735440/engineer-pleased-with-his-wallace/ |url-status=live }}</ref> The Idaho section was declared fully complete in July 1992 after the Veterans Memorial Centennial Bridge opened near Coeur d'Alene.<ref>{{cite news |last=Foster |first=J. Todd |date=July 4, 1992 |title=New I-90 stretch offers scenery, safety |page=A1 |work=The Spokesman-Review |url=https://www.newspapers.com/clip/84197254/new-i-90-stretch-offers-scenery-safety/ |via=Newspapers.com |accessdate=December 9, 2021 |archive-date=December 10, 2021 |archive-url=https://web.archive.org/web/20211210064835/https://www.newspapers.com/clip/84197254/new-i-90-stretch-offers-scenery-safety/ |url-status=live }}</ref>

===Completion and later projects===
[[File:Interstate 90 floating bridges after Blue Angels performance - 01.jpg|thumb|right|The [[Homer M. Hadley Memorial Bridge|Homer M. Hadley]] (left) and [[Lacey V. Murrow Memorial Bridge|Lacey V. Murrow]] (right) floating bridges carry I-90 across [[Lake Washington]] from [[Seattle]] to [[Mercer Island, Washington|Mercer Island]].|alt=View of two bridges carrying a divided highway over a lake with light traffic]]

Washington was the last state to complete its section of I-90, primarily due to disputes and litigation over the Seattle–Bellevue section.<ref name="Times-90Saga"/> The Snoqualmie Pass section was completed in 1981 with a viaduct for westbound traffic that stands {{convert|150|ft|m}} over Denny Creek.<ref>{{cite news |last=O'Ryan |first=John |date=December 4, 1981 |title=Cars whiz along on feared bridge |page=C1 |work=[[Seattle Post-Intelligencer]]}}</ref> The viaduct replaced an earlier plan for a ground-level freeway at the behest of environmentalists; the [[Mountains to Sound Greenway]] was established in 1990 along the corridor between Seattle and [[Thorp, Washington|Thorp]] to preserve wilderness and recreational areas and was designated as a National Scenic Byway in 1998, a first for an Interstate Highway.<ref>{{cite news |last=Senos |first=Rene |date=April 18, 2002 |title=Blending scenery and ecology |url=https://www.djc.com/news/en/11132529.html |work=[[Seattle Daily Journal of Commerce]] |accessdate=December 1, 2021 |archive-date=October 9, 2022 |archive-url=https://web.archive.org/web/20221009233921/https://www.djc.com/news/en/11132529.html |url-status=live }}</ref><ref>{{cite web |last=Ott |first=Jennifer |date=May 18, 2021 |title=Mountains to Sound Greenway Trust |url=https://www.historylink.org/File/21231 |work=[[HistoryLink]] |accessdate=December 1, 2021 |archive-date=October 9, 2022 |archive-url=https://web.archive.org/web/20221009233856/https://www.historylink.org/File/21231 |url-status=live }}</ref> The extension into Seattle was completed in stages between 1989 and 1993 and cost $1.56&nbsp;billion (equivalent to ${{format price|{{Inflation|US-GDP|1560000000|1993}}}} in {{Inflation-year|US-GDP}} dollars){{inflation-fn|US-GDP}} to construct.<ref>{{cite news |last=Cabrera |first=Luis |date=September 11, 1993 |title=Floating bridge finishes interstate |page=5A |work=[[Detroit Free Press]] |agency=Associated Press |url=https://www.newspapers.com/clip/22449728/floating_bridge_finishes_interstate/ |via=Newspapers.com |access-date=August 2, 2018 |archive-url=https://web.archive.org/web/20180803074519/https://www.newspapers.com/clip/22449728/floating_bridge_finishes_interstate/ |archive-date=August 3, 2018 |url-status=live }}</ref> The project involved construction of a [[Homer M. Hadley Memorial Bridge|new floating bridge]], expansion of the Mount Baker Ridge Tunnel, addition of [[freeway lid|lids]] with parks, and extensive mitigation for environmental and social impacts.<ref name="Times-90Saga"/><ref>{{cite news |last=Corr |first=O. Casey |date=June 2, 1989 |title=The road to recovery—new homes, new park |page=A1 |work=Seattle Post-Intelligencer}}</ref> The project was originally planned to be completed in 1992, but was delayed a year due to the sinking of the [[Lacey V. Murrow Memorial Bridge|original floating bridge]] during renovations in November 1990; the bridge was rebuilt and opened for eastbound traffic on September 12, 1993.<ref name="Times-90Saga"/><ref>{{cite news |last=Gough |first=William |date=June 22, 1989 |title=That'll be one bridge—to go |page=A1 |work=The Seattle Times}}</ref>

Extensions at both termini of I-90 were completed in the early 2000s as part of separate projects. The west end at Washington State Route&nbsp;519 in Seattle was rebuilt as a series of ramps near [[Safeco Field]] (now T-Mobile Park) to replace an existing intersection.<ref>{{cite news |last=Lindblom |first=Mike |date=May 29, 2003 |title=Some I-90 drivers get turned around |page=A1 |work=The Seattle Times}}</ref> A component of the [[Big Dig]] megaproject in Boston that extended I-90 east by {{convert|3.5|mi|km}} under Fort Point Channel and Boston Harbor to Logan International Airport opened on January 18, 2003,<ref name="MassDOT-BigDig"/> at a cost of $6.5&nbsp;billion (equivalent to ${{format price|{{Inflation|US-GDP|6500000000|2003}}}} in {{Inflation-year|US-GDP}} dollars).{{inflation-fn|US-GDP}}<ref>{{cite news |last=Lewis |first=Raphael |date=January 18, 2003 |title=Pike tunnel finished, and new era begins |page=A1 |work=The Boston Globe |url=http://www.boston.com/dailyglobe2/018/metro/Pike_tunnel_finished_and_new_era_begins+.shtml |url-status=dead |archive-url=https://web.archive.org/web/20030124144148/http://www.boston.com/dailyglobe2/018/metro/Pike_tunnel_finished_and_new_era_begins+.shtml |archive-date=January 24, 2003 |accessdate=December 9, 2021}}</ref> The Fort Point Channel tunnel later closed in July 2006 due to a [[Big Dig ceiling collapse|ceiling panel collapse]] that killed one person. It reopened in January 2007 after repairs and retrofit work.<ref>{{cite news |last=Jefferson |first=Brandie M. |date=January 14, 2007 |title=Traffic begins flowing through Big Dig tunnel where woman died |url=http://archive.boston.com/news/local/massachusetts/articles/2007/01/14/traffic_begins_flowing_through_big_dig_tunnel_where_woman_died/ |work=The Boston Globe |agency=Associated Press |accessdate=December 9, 2021 |archive-date=December 10, 2021 |archive-url=https://web.archive.org/web/20211210073558/http://archive.boston.com/news/local/massachusetts/articles/2007/01/14/traffic_begins_flowing_through_big_dig_tunnel_where_woman_died/ |url-status=live }}</ref>

Other sections of I-90 have been rebuilt or replaced to accommodate modern needs and meet updated safety standards. The {{convert|11|mi|km|adj=mid}} Dan Ryan Expressway in Chicago was reconstructed over a two-year period from 2006 to 2007 at a cost of $975&nbsp;million (equivalent to ${{format price|{{Inflation|US-GDP|975000000|2007}}}} in {{Inflation-year|US-GDP}} dollars),{{inflation-fn|US-GDP}} adding auxiliary lanes and improved bridges. The section carried over 300,000 daily vehicles prior to the project.<ref>{{cite news |last=Haggerty |first=Ryan |date=October 26, 2007 |title=All lanes will be open on the Dan Ryan |at=sec. 2, p. 2 |url=http://www.chicagotribune.com/news/local/chi-danryan_weboct26,0,7051621.story |work=Chicago Tribune |url-status=dead |archive-url=https://web.archive.org/web/20071227191626/http://www.chicagotribune.com/news/local/chi-danryan_weboct26,0,7051621.story |archive-date=December 27, 2007 |accessdate=December 10, 2021}}</ref> Cleveland's [[Innerbelt Bridge]], which carried I-90 over the Cuyahoga River, was replaced with the George V. Voinovich Bridges, which opened in November 2013 for westbound traffic and September 2016 for eastbound traffic.<ref>{{cite news |last=Christ |first=Ginger |date=September 14, 2016 |title=Second George V. Voinovich Bridge (Inner Belt Bridge) opens to traffic Sept. 25 |url=https://www.cleveland.com/metro/2016/09/george_v_voinovich_bridge_inne.html |work=The Plain Dealer |accessdate=December 10, 2021 |archive-date=December 10, 2021 |archive-url=https://web.archive.org/web/20211210080002/https://www.cleveland.com/metro/2016/09/george_v_voinovich_bridge_inne.html |url-status=live }}</ref> The old bridge was [[Building implosion|imploded]] with explosives on July 12, 2014, and dismantled by the end of the year.<ref>{{cite news |last=Grant |first=Alison |date=July 12, 2014 |title=55-year-old Inner Belt Bridge vanishes in a half second |url=https://www.cleveland.com/metro/2014/07/55-year-old_inner_belt_bridge.html |work=The Plain Dealer |accessdate=December 10, 2021 |archive-date=December 10, 2021 |archive-url=https://web.archive.org/web/20211210080003/https://www.cleveland.com/metro/2014/07/55-year-old_inner_belt_bridge.html |url-status=live }}</ref> The states of Minnesota and Wisconsin replaced the [[I-90 Mississippi River Bridge|Dresbach Bridge]] over the Mississippi River in 2016; the project was spearheaded by Minnesota following the [[I-35W Mississippi River bridge#Collapse|I-35W Mississippi River bridge collapse]] in 2007.<ref name="LCT-Bridge"/>