| 词条 | List of Interstate Highways in Oregon |
| 释义 |
|title=Interstate Highways of the Oregon Highway System |shields={{infobox road/shieldmain/USA|state=OR|type=I|route=5}}{{infobox road/shieldmain/USA|state=OR|type=I|route=84}}{{infobox road/shieldmain/USA|state=OR|type=I|route=205}} |caption=Highway markers for Interstates in Oregon |map= |map_notes= |map_alt= |maint=ODOT |length_mi= |length_ref= |formed= {{start date|1956|06|29}}[1] |interstate=Interstate nn (I‑nn)
The Interstate Highways in Oregon are the segments of the national Dwight D. Eisenhower System of Interstate and Defense Highways[2] that are owned and maintained by the U.S. state of Oregon. On a national level, the standards and numbering for the system are handled by the Federal Highway Administration (FHWA) and the American Association of State Highway and Transportation Officials (AASHTO), while the highways in Oregon are maintained by the Oregon Department of Transportation (ODOT). These highways are built to Interstate Highway standards,[3] meaning they are all freeways with minimum requirements for full control of access, design speeds of {{convert|50|to|70|mph|km/h|round=5}} depending on type of terrain, a minimum of two travel lanes in each direction, and specific widths of lanes or shoulders;[4] exceptions from these standards have to be approved by the FHWA.[5] The numbering scheme used to designate the Interstates was developed by AASHTO, an organization composed of the various state departments of transportation in the United States.[6] The last section of the Interstate Highway system to be built in Oregon, on I-82 near Hermiston, opened on September 20, 1988.[7] {{-}}Primary Interstate Highways{{routelist top|length_ref=[8]}}{{routelist row|state=OR |type=I |route=5 |length_mi=308.14 |terminus_a={{jct|state=CA|I|5|noshield=y}} at the California state line |terminus_b={{jct|state=WA|I|5|noshield=y}} at the Washington state line |established=1957 |notes=none }}{{routelist row |state=OR |type=I 1957 |route=80N |length_mi=375.17 |terminus_a={{jct|state=OR|I|5|US|30|noshield=y}} in Portland |terminus_b={{jct|state=ID|I|80N|noshield=y}} at the Idaho state line |established=1957 |decommissioned=1980 |notes=Renumbered to I-84 }}{{routelist row |state=OR |type=I |route=82 |length_mi=11.01 |terminus_a={{jct|state=WA|I|82|noshield=y}} at the Washington state line |terminus_b={{jct|state=OR|I|84|US|30|noshield=y}} in Umatilla County |established=1957 |notes=none }}{{routelist row |state=OR |type=I |route=84 |length_mi=375.17 |terminus_a={{jct|state=OR|I|5|US|30|noshield=y}} in Portland |terminus_b={{jct|state=ID|I|84|noshield=y}} at the Idaho state line |established=1980 |decommissioned= |notes=none }}{{routelist bottom|keys=former}} Auxiliary Interstate Highways{{routelist top|length_ref=[9]|notes=no}}{{routelist row|state=OR |type=I |route=105 |length_mi=3.49 |terminus_a={{jct|state=OR|OR|99|OR|126|OR-Bus|126|noshield=y}} in Eugene |terminus_b={{jct|state=OR|I|5|OR|126|noshield=y}} in Springfield |established=1957|circa_established=yes }}{{routelist row |state=OR |type=I |route=205 |length_mi=26.07 |terminus_a={{jct|state=OR|I|5|noshield=y}} in Tualatin |terminus_b={{jct|state=WA|I|205|noshield=y}} at the Washington state line |established=1975|circa_established=yes }}{{routelist row |state=OR |type=I |route=305 |length_mi= |terminus_a=Salem |terminus_b={{jct|state=OR|I|5|noshield=y}} in Salem |established=1950 |decommissioned=1960s }}{{routelist row |state=OR |type=I |route=405 |length_mi=3.53 |terminus_a={{jct|state=OR|I|5|noshield=y}} in Portland |terminus_b={{jct|state=WA|I|5|US|30|noshield=y}} in Portland |established=1969|circa_established=yes }}{{routelist row |state=OR |type=I |route=505 |length_mi= |terminus_a={{jct|state=WA|US|30|noshield=y}} in Portland |terminus_b={{jct|state=OR|I|405|US|30|noshield=y}} in Portland |established=1950 |decommissioned=1970 }}{{routelist bottom|keys=future}} References{{refbegin}}
1. ^{{harvp|McNichol|2006|p=106}}. 2. ^{{cite book |last= Swift |first= Earl |year= 2011 |title= The Big Roads: The Untold Story of the Engineers, Visionaries, and Trailblazers Who Created the American Superhighways |location= Boston |publisher= Mariner |isbn= 978-0-547-90724-6 |page=5}} 3. ^{{cite book |last= Lewis |first= Tom |year= 2013 |title= Divided Highways: Building the Interstate Highways, Transforming American Life |location= Ithaca, NY |publisher= Cornell University Press |isbn= 978-0-8014-7822-2 |edition= Updated |page=253}} 4. ^{{harvp|McNichol|2006|pp=10–11}}. 5. ^{{cite web |editor-first= Mark |editor-last= Zander |date= September 19, 2013 |title= Chapter 11: Design, Section 44: Interstate Highways |url= http://roadwaystandards.dot.wi.gov/standards/fdm/11-44.pdf |format= PDF |work= Facilities Development Manual |publisher= Wisconsin Department of Transportation |page= 2 |accessdate= April 14, 2014 |deadurl= yes |archiveurl= https://web.archive.org/web/20140416063602/http://roadwaystandards.dot.wi.gov/standards/fdm/11-44.pdf |archivedate= April 16, 2014 |df= }} 6. ^{{harvp|McNichol|2006|pp=57, 121}}. 7. ^{{cite news |last=Cockle |first=Dick |date=September 21, 1988 |title=Final segment completes freeway system |page=B4 |work=The Oregonian}} 8. ^{{cite web |first= Kevin |last= Adderly |publisher= Federal Highway Administration |url= http://www.fhwa.dot.gov/planning/national_highway_system/interstate_highway_system/routefinder/table01.cfm |title= Table 1: Main Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways as of December 31, 2015 |work= Route Log and Finder List |date= January 27, 2016 |accessdate= August 31, 2016}} 9. ^{{cite web |first= Kevin |last= Adderly |publisher= Federal Highway Administration |url= http://www.fhwa.dot.gov/planning/national_highway_system/interstate_highway_system/routefinder/table02.cfm |title= Table 2: Auxiliary Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways as of December 31, 2015 |date= January 27, 2016 |work= Route Log and Finder List |accessdate= August 31, 2016}} External links{{attached KML}} 2 : Interstate Highways in Oregon|Lists of roads in Oregon |
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