Editing Interstate Bridge (section)

==Vertical lift==

The bridge is {{convert|3538|ft|m}} long with a main span of {{convert|531|ft|m}}.<ref>{{cite book |first1=Dwight A. |last1=Smith |last2=Norman |first2=James B. |author2-link=James B. Norman |last3=Dykman |first3=Pieter T. |title=Historic Highway Bridges of Oregon |publisher=Oregon Historical Society Press |year=1989 |isbn=0-87595-205-4 |page=209}}</ref> The vertical lift provides {{convert|176|ft|m|1}} of river clearance when fully opened. Openings last about ten minutes and occur between 20 and 30 times per month,<ref name="i5p">{{Cite report |author=I-5 Partnership |title=Regional Economic Effects of the I-5 Corridor: Columbia River Crossing Transportation Choke Points |url=https://www.i-5partnership.com/reports/RegionalEffects_r1.2.pdf |access-date=March 4, 2009 |url-status=dead |archive-url=https://web.archive.org/web/20090317065550/https://www.i-5partnership.com/reports/RegionalEffects_r1.2.pdf |archive-date=March 17, 2009}}</ref> or around 300 per year.<ref name="ptld-trib-25aug2023">{{cite news |last1=Wong |first1=Peter |title=Interstate Bridge shows its age |url=https://www.portlandtribune.com/news/interstate-bridge-shows-its-age/article_c9a5bdc4-4308-11ee-91aa-079cd8c |access-date=August 31, 2023 |newspaper=[[Portland Tribune]] |date=August 25, 2023 }}{{dead link|date=May 2025|bot=medic}}{{cbignore|bot=medic}}</ref>

[[File:Interstate Br lift span raised, barge passing under.jpg|thumb|right|A barge passing under the raised lift spans]]
[[File:Interstate Bridge.jpg|thumb|right|Viewed from the northeast, in Vancouver]]
Outside peak commuting times (6:30&nbsp;a.m. to 9 a.m. and from 2:30&nbsp;p.m. to 6 p.m), marine traffic is granted right of way at the bridge by federal law (33 CFR 117.869).<ref>{{Cite news |last=Albrecht |first=Bob |title=High river levels prompt bridge lifts |url=https://www.columbian.com/news/2011/jun/02/high-river-levels-prompt-bridge-lifts/ |access-date=January 24, 2013 |newspaper=The Columbian |date=June 2, 2011 |archive-date=February 10, 2016 |archive-url=https://web.archive.org/web/20160210145804/http://www.columbian.com/news/2011/jun/02/high-river-levels-prompt-bridge-lifts/ |url-status=live }}</ref><ref>{{Cite web |title=Drawbridge Operation Regulation; Columbia River, Vancouver, WA |url=https://www.federalregister.gov/articles/2012/08/31/2012-21535/drawbridge-operation-regulation-columbia-river-vancouver-wa |publisher=Federal Register |access-date=January 24, 2013 |archive-date=September 30, 2015 |archive-url=https://web.archive.org/web/20150930120010/https://www.federalregister.gov/articles/2012/08/31/2012-21535/drawbridge-operation-regulation-columbia-river-vancouver-wa |url-status=live }}</ref>

In 2006, the six total lanes of the bridges carried 130,000 vehicles daily.<ref name = "Wood-Wortman"/> Full traffic capacity occurs four hours every day.<ref name="i5p"/>

The Interstate Bridge's name is a simple descriptive one based on its location, as a bridge connecting two states.<ref name="Wood-Wortman"/> In 1917, the new bridge gave its name to a Portland arterial street. Shortly before the bridge opened, a pair of streets through North Portland that were planned to be treated as the main route to and from the bridge, Maryland Avenue and Patton Avenue, were renamed Interstate Avenue.<ref name="oreg1916dec7">{{Cite news |url=http://oregonnews.uoregon.edu/lccn/sn83025138/1916-12-07/ed-1/seq-13/ |title=Street Name Changed: Maryland and Patton Avenue become Interstate Avenue |date=December 7, 1916 |newspaper=The Morning Oregonian |page=13 |archive-date=September 14, 2016 |access-date=July 17, 2016 |archive-url=https://web.archive.org/web/20160914121510/http://oregonnews.uoregon.edu/lccn/sn83025138/1916-12-07/ed-1/seq-13/ |url-status=live }}</ref>