Editing Interstate 90 (section)

===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"/>