Editing Interstate 5 (section)

==Route description==
{{lengths table|length_ref=<ref name="fhwa" />}}
|-
|[[Interstate 5 in California|CA]]
|{{convert|796.53|mi|km|disp=table}}
|-
|[[Interstate 5 in Oregon|OR]]
|{{convert|308.14|mi|km|disp=table}}
|-
|[[Interstate 5 in Washington|WA]]
|{{convert|276.62|mi|km|disp=table}}
|-
|Total
|{{convert|1381.29|mi|km|disp=table}}
|}
{{Multiple image
| direction         = vertical
| width             = 250
| image1            = Interstate5newhallpass.JPG
| caption1          = I-5 in the [[Newhall Pass Interchange]] where it intersects with [[Interstate 210 and State Route 210 (California)|I-210]] and SR&nbsp;14 near [[Santa Clarita, California|Santa Clarita]]
| image2            = Interstate 5 Southbound near Derrick Ave.JPG
| caption2          = I-5 in the Central Valley, looking south near Derrick Avenue in [[Fresno County, California|Fresno County]]
| image3            = I-5 near Shasta.jpg
| caption3          = I-5 southbound, approaching Weed and Mount Shasta
| image4            = I5inPortlandNight.jpg
| caption4          = I-5 running adjacent to the Willamette River and passes by the [[Moda Center]], and [[Oregon Convention Center]] in [[Downtown Portland, Oregon|Downtown Portland]]
| image5            = Seattle I-5 skyline dllu.jpg
| caption5          = I-5 passing through [[Downtown Seattle]]
}}

I-5 is a major [[Interstate Highway]] that spans {{convert|1,381|mi|km}} and runs north–south through the [[West Coast of the United States|West Coast]] states of [[California]], [[Oregon]], and [[Washington (state)|Washington]]. It connects several major metropolitan areas as well as agricultural regions, seaports, and freight destinations. The freeway ranges from four lanes in some rural sections to 22 lanes in [[Orange County, California]], where it had been widened and reconstructed.<ref name="LATimes-Weikel">{{cite news |last=Weikel |first=Dan |date=July 5, 2004 |title=The Road More Heavily Traveled |url=https://www.latimes.com/archives/la-xpm-2004-jul-05-me-thefive5-story.html |work=Los Angeles Times |accessdate=January 1, 2023 |archive-date=December 1, 2022 |archive-url=https://web.archive.org/web/20221201073320/https://www.latimes.com/archives/la-xpm-2004-jul-05-me-thefive5-story.html |url-status=live }}</ref>

===California===
{{main|Interstate 5 in California}}

The southern terminus of I-5 is at the [[Mexico–United States border|Mexican border]] at the [[San Ysidro Port of Entry]], the busiest land border crossing in the [[Western Hemisphere]]; the crossing handles a daily average of 70,000 vehicles and 20,000 pedestrians crossing northbound and connects with [[Mexican Federal Highway 1]] in [[Tijuana]].<ref>{{cite news |last=Sweeney |first=Don |date=November 25, 2018 |title=5 things to know about massive San Ysidro border checkpoint closed by caravan protest |url=https://www.sacbee.com/news/california/article222172450.html |work=[[The Sacramento Bee]] |accessdate=December 13, 2021 |archive-date=May 23, 2020 |archive-url=https://web.archive.org/web/20200523034746/https://www.sacbee.com/news/california/article222172450.html |url-status=live }}</ref> The freeway splits in [[San Diego]]'s [[San Ysidro, San Diego|San Ysidro]] neighborhood, with I-5 traveling northwest through [[Chula Vista, California|Chula Vista]] and [[National City, California|National City]] on the John J. Montgomery Freeway and [[Interstate 805|I-805]] serving the eastern neighborhoods.<ref name="CA-Names">{{cite web |author=Caltrans Office of Highway System Information and Performance |date=January 2021 |title=2020 Named Freeways, Highways, Structures and Other Appurtenances in California |pages=8–15 |url=https://dot.ca.gov/-/media/dot-media/programs/research-innovation-system-information/documents/place-names/web-2020-named-freeways-final-a11y.pdf |publisher=[[California Department of Transportation]] |accessdate=December 16, 2021 |archive-date=December 17, 2021 |archive-url=https://web.archive.org/web/20211217064734/https://dot.ca.gov/-/media/dot-media/programs/research-innovation-system-information/documents/place-names/web-2020-named-freeways-final-a11y.pdf |url-status=live }}</ref> I-5 follows the shore of [[San Diego Bay]] and intersects [[California State Route 15|State Route&nbsp;15]] (a continuation of [[Interstate 15|I-15]]) near [[Naval Station San Diego]]. The freeway then travels around [[downtown San Diego]] and [[San Diego International Airport]] before reaching a junction with [[Interstate 8|I-8]].<ref name="google">{{google maps |title=Overview of Interstate 5 |url=https://www.google.com/maps/dir/32.5427538,-117.0292493/49.0020791,-122.7560176/@40.4396594,-129.1964226,3484765m/am=t/data=!3m2!1e3!4b1 |accessdate=December 15, 2021}}</ref>

I-5 bisects the [[University of California, San Diego]] campus, merging with I-805 nearby, and follows the [[Pacific Ocean|Pacific coastline]] through the [[North County (San Diego area)|northern suburbs]] of San Diego. Between [[Oceanside, California|Oceanside]] and [[San Clemente, California|San Clemente]], an {{convert|18|mi|km|adj=mid}} stretch of the San Diego Freeway passes through [[Marine Corps Base Camp Pendleton]] before entering [[Orange County, California|Orange County]]. At [[Dana Point, California|Dana Point]], I-5 turns inland and heads north through [[Mission Viejo, California|Mission Viejo]] to the [[El Toro Y]] interchange in [[Irvine, California|Irvine]], where [[Interstate 405 (California)|I-405]] splits and carries the San Diego Freeway designation.<ref name="CA-Names"/> I-5 continues northwest as the [[Santa Ana Freeway]] through several Orange County and [[Los Angeles County, California|Los Angeles County]] suburbs and passes near [[Disneyland]] in [[Anaheim, California|Anaheim]].<ref>{{cite news |last=Masters |first=Nathan |date=April 21, 2016 |title=How the 5 Freeway Made Orange County Suburban |url=https://www.kcet.org/shows/lost-la/how-the-5-freeway-made-orange-county-suburban |publisher=[[KCET]] |accessdate=December 15, 2021 |archive-date=December 16, 2021 |archive-url=https://web.archive.org/web/20211216065924/https://www.kcet.org/shows/lost-la/how-the-5-freeway-made-orange-county-suburban |url-status=live }}</ref> The freeway intersects [[Interstate 605|I-605]] in [[Downey, California|Downey]] and [[Interstate 710|I-710]] in [[Commerce, California|Commerce]] before reaching the city of [[Los Angeles]].<ref name="google"/> Southern Californians often refer to I-5 as "the 5" or as the Santa Ana Freeway in the Los Angeles area.<ref>{{cite news |last=Edgar |first=Deirdre |date=September 19, 2012 |title=Southern California freeways are a number, not a name |url=https://www.latimes.com/la-xpm-2012-sep-19-la-me-rr-southland-freeways-are-a-number-not-a-name-20120919-story.html |work=[[Los Angeles Times]] |accessdate=December 15, 2021 |archive-date=December 16, 2021 |archive-url=https://web.archive.org/web/20211216065843/https://www.latimes.com/la-xpm-2012-sep-19-la-me-rr-southland-freeways-are-a-number-not-a-name-20120919-story.html |url-status=live }}</ref><ref>{{cite news |last=Masters |first=Nathan |date=November 10, 2015 |title=The 5, the 101, the 405: Why Southern Californians Love Saying 'the' Before Freeway Numbers |url=https://www.kcet.org/shows/lost-la/the-5-the-101-the-405-why-southern-californians-love-saying-the-before-freeway-numbers |publisher=KCET |accessdate=December 15, 2021 |archive-date=August 20, 2016 |archive-url=https://web.archive.org/web/20160820000300/https://www.kcet.org/shows/lost-la/the-5-the-101-the-405-why-southern-californians-love-saying-the-before-freeway-numbers |url-status=live }}</ref>

At the [[East Los Angeles Interchange]] near [[downtown Los Angeles]], I-5 intersects [[U.S. Route 101|US&nbsp;101]] and begins a short [[concurrency (road)|concurrency]] with [[Interstate 10|I-10]] on a section of the [[Golden State Freeway]].<ref name="CA-Names"/> The freeway splits from {{nowrap|I-10}} and turns northwest to follow the [[Los Angeles River]] through [[Glendale, California|Glendale]] and into [[Burbank, California|Burbank]]. I-5 then leaves the river and travels across the [[San Fernando Valley]], later crossing the [[Newhall Pass]] through the [[Santa Susana Mountains]] to reach the [[Santa Clarita Valley]]; the [[Newhall Pass interchange]] with [[California State Route 14|State Route&nbsp;14]] is notable for having separate lanes for truck traffic. The freeway passes the city of [[Santa Clarita, California|Santa Clarita]] and ascends into the [[Sierra Pelona Mountains]], where the northbound and southbound lanes separate and cross sides for approximately {{convert|5|mi|km}}. The northbound ascent includes a continuous 5&nbsp;percent [[Grade (slope)|grade]] for {{convert|5|mi|km}}.<ref name="LAT-Grapevine">{{cite news |last=Condon |first=Lee |date=July 22, 2000 |title=Motorists Face Wrath of the Grapevine |page=A3 |work=Los Angeles Times |url=https://www.newspapers.com/clip/90653386/motorists-face-wrath-of-the-grapevine/ |via=[[Newspapers.com]] |accessdate=December 15, 2021 |archive-date=December 16, 2021 |archive-url=https://web.archive.org/web/20211216072731/https://www.newspapers.com/clip/90653386/motorists-face-wrath-of-the-grapevine/ |url-status=live }}</ref> After passing [[Pyramid Lake (Los Angeles County, California)|Pyramid Lake]], I-5 makes several turns as it follows a series of narrow valleys to reach the second-highest point of its entire length, [[Tejon Pass]] (elevation {{convert|4144|ft|m|abbr=on|disp=or}}) in the [[Tehachapi Mountains]].<ref name="google"/><ref name="LAT-Grapevine"/>

The freeway then traverses the narrow [[Grapevine, California|Grapevine Canyon]] and descends for {{convert|12|mi|km}} into the [[San Joaquin Valley]].<ref>{{cite news |last=Rasmussen |first=Cecilia |date=March 8, 1993 |title=L.A. Scene: The City Then and Now |page=B3 |work=Los Angeles Times |url=https://www.newspapers.com/clip/90653293/la-scene-the-city-then-and-now/ |via=Newspapers.com |accessdate=December 15, 2021 |archive-date=December 16, 2021 |archive-url=https://web.archive.org/web/20211216072723/https://www.newspapers.com/clip/90653293/la-scene-the-city-then-and-now/ |url-status=live }}</ref> At [[Wheeler Ridge, California|Wheeler Ridge]] near the south end of the valley, [[California State Route 99|State Route&nbsp;99]] splits from the freeway to serve [[Bakersfield, California|Bakersfield]] and other major cities in the [[Central Valley (California)|Central Valley]], while I-5 stays to the west. Now named the West Side Freeway,<ref name="CA-Names"/> I-5 travels northwest along the edge of the Central Valley through farmland and avoids populated areas. The freeway is connected to several of the valley's main cities, including [[Fresno, California|Fresno]], [[Merced, California|Merced]], and [[Modesto, California|Modesto]], by other highways.<ref name="google"/>

Near [[Tracy, California|Tracy]], [[Interstate 580 (California)|I-580]] splits from I-5 to provide the first of several connections to the [[San Francisco Bay Area]]; [[Interstate 205 (California)|I-205]] northeast of Tracy also provides a connection through I-580. The freeway continues north through [[Stockton, California|Stockton]] to [[Sacramento]], where it follows the [[Sacramento River]] through the southern suburbs and along the edge of [[Downtown Sacramento|downtown]]. I-5 intersects two transcontinental highways in the Sacramento area: [[U.S. Route 50|US&nbsp;50]] (and unsigned [[Interstate 305 (California)|I-305]]) south of downtown and [[Interstate 80|I-80]] in the northern suburbs. After an unsigned concurrency with State Route&nbsp;99 in northern Sacramento, the freeway turns west to pass the [[Sacramento International Airport|city's airport]] and resumes its northwestern path at [[Woodland, California|Woodland]]. It then intersects [[Interstate 505|I-505]], another Bay Area connector, near [[Dunnigan, California|Dunnigan]].<ref name="google"/>

The freeway continues north along the western edge of the [[Sacramento Valley]], passing through farmland and several small towns before reaching the end of the valley at [[Red Bluff, California|Red Bluff]]. I-5 then traverses the rugged [[Shasta Cascade]] region, passing through [[Redding, California|Redding]] and crossing [[Shasta Lake]] before beginning its ascent towards [[Mount Shasta]]. The freeway follows the Sacramento River upstream to the southwestern slopes of the mountain and turns northwest to reach [[Weed, California|Weed]], where it intersects [[U.S. Route 97|US&nbsp;97]], a major highway serving the [[Inland Northwest]] region. I-5 continues through [[Yreka, California|Yreka]] in the [[Shasta Valley]] and follows the [[Klamath River]] into the [[Siskiyou Mountains]], where it crosses into Oregon.<ref name="google"/>

===Oregon===
{{main|Interstate 5 in Oregon}}

I-5 enters Oregon near [[Siskiyou Summit]], which sits at {{convert|4310|ft|m}} and is the highest point on the highway.<ref>{{cite encyclopedia |last=LaLande |first=Jeff |date=March 17, 2018 |title=Siskiyou Pass |url=https://www.oregonencyclopedia.org/articles/siskiyou_pass/ |encyclopedia=[[The Oregon Encyclopedia]] |accessdate=December 16, 2021 |archive-date=December 16, 2021 |archive-url=https://web.archive.org/web/20211216080630/https://www.oregonencyclopedia.org/articles/siskiyou_pass/ |url-status=live }}</ref><ref>{{cite news |last=Fattig |first=Paul |date=October 30, 2012 |title=ODOT plans to use rock salt for I-5 ice melt |url=http://mailtribune.com/archive/odot-plans-to-use-rock-salt-for-i-5-ice-melt |work=[[Mail Tribune]] |url-status=dead |archive-url=https://web.archive.org/web/20200810193416/https://mailtribune.com/archive/odot-plans-to-use-rock-salt-for-i-5-ice-melt |archive-date=August 10, 2020 |accessdate=December 16, 2021}}</ref> From the summit, I-5 descends by {{convert|2,300|ft|m}} over {{convert|6|mi|km}} at a 6&nbsp;percent grade to reach the [[Rogue Valley]].<ref>{{cite web |date=September 2005 |title=Respect the Siskiyou Pass |url=https://www.oregon.gov/ODOT/MCT/Documents/siskiyoupass.pdf |publisher=Oregon Department of Transportation |accessdate=December 17, 2021 |archive-date=March 21, 2018 |archive-url=https://web.archive.org/web/20180321063232/http://www.oregon.gov/ODOT/MCT/Documents/siskiyoupass.pdf |url-status=live }}</ref> The freeway passes through [[Ashland, Oregon|Ashland]] and [[Medford, Oregon|Medford]], running parallel to [[Oregon Route 99]], and turns west to follow the [[Rogue River (Oregon)|Rogue River]] to [[Grants Pass, Oregon|Grants Pass]], where it intersects [[U.S. Route 199|US&nbsp;199]]. I-5 then turns north and crosses a series of passes in the [[Klamath Mountains]] to reach the Umpqua Valley, where it follows the [[South Umpqua River]] to [[Roseburg, Oregon|Roseburg]].<ref name="google"/><ref name="OR-Map">{{cite map |date=April 2019 |title=Oregon 2019–2021 Official State Map |url=https://www.oregon.gov/odot/Data/Documents/Map_Official_State_Front.pdf |inset= Portland and Vicinity|publisher=Oregon Department of Transportation |accessdate=December 17, 2021 |archive-date=July 17, 2020 |archive-url=https://web.archive.org/web/20200717135748/https://www.oregon.gov/odot/Data/Documents/Map_Official_State_Front.pdf |url-status=live }}</ref>

The highway enters the [[Willamette Valley]] near [[Cottage Grove, Oregon|Cottage Grove]] and forms the boundary between the cities of [[Eugene, Oregon|Eugene]] and [[Springfield, Oregon|Springfield]]. After crossing the [[Willamette River]], I-5 intersects [[Oregon Route 126]], which carries [[Interstate 105 (Oregon)|I-105]], and [[Oregon Route 569]]; both highways provide connections to Eugene and Springfield. I-5 then travels due north through farmland on the east side of the Willamette River, passing a junction with [[U.S. Route 20|US&nbsp;20]] in [[Albany, Oregon|Albany]], and bisects eastern [[Salem, Oregon|Salem]] near the [[Oregon State Capitol|state capitol campus]].<ref name="OR-Map"/> It is connected to downtown Salem by [[Oregon Route 22]] and the [[Oregon Route 99E Business|Salem Parkway]], which joins I-5 as the freeway crosses the [[45th parallel north|45th&nbsp;parallel]] near [[Keizer, Oregon|Keizer]].<ref name="google"/><ref>{{cite news |last=Brown |first=K. Williams |date=July 10, 2011 |title=The beauty of halfwayism |page=5D |work=[[Statesman Journal]] |url=https://www.newspapers.com/clip/21727397/cities-on-the-45th-parallel-n/ |via=Newspapers.com |accessdate=December 16, 2021 |archive-date=December 17, 2021 |archive-url=https://web.archive.org/web/20211217081406/https://www.newspapers.com/clip/21727397/cities-on-the-45th-parallel-n/ |url-status=live }}</ref>

From Salem, I-5 turns northeast and passes [[Woodburn, Oregon|Woodburn]] before crossing the Willamette River on the [[Boone Bridge (Oregon)|Boone Bridge]] in [[Wilsonville, Oregon|Wilsonville]], at the south end of the [[Portland metropolitan area, Oregon|Portland metropolitan area]]. The freeway travels through the southern suburbs of [[Portland, Oregon|Portland]], intersecting [[Interstate 205 (Oregon–Washington)|I-205]] in [[Tualatin, Oregon|Tualatin]] and [[Oregon Route 217]] in [[Tigard, Oregon|Tigard]] before entering the city proper. I-5 then turns northeast to follow [[Barbur Boulevard]] (part of Route&nbsp;99W) and navigate the [[Terwilliger curves]]. The freeway continues north through the [[South Waterfront, Portland, Oregon|South Waterfront]] neighborhood, crossing under the [[Portland Aerial Tram]] and the western approach to the [[Ross Island Bridge]] (carrying [[U.S. Route 26|US&nbsp;26]]) before reaching an interchange with [[Interstate 405 (Oregon)|I-405]].<ref name="google"/><ref name="OR-Map"/>

I-5 and I-405 form a complete loop around [[downtown Portland]], with I-5 crossing the Willamette River on the [[Marquam Bridge]] to run along the eastern riverfront. The freeway has interchanges with several major bridges crossing the Willamette, as well as the western terminus of [[Interstate 84 (Oregon–Utah)|I-84]] near the [[Oregon Convention Center]]. From the I-84 interchange to a second junction with I-405 near the [[Fremont Bridge (Portland, Oregon)|Fremont Bridge]], I-5 is concurrent with [[U.S. Route 30|US&nbsp;30]], which continues west towards [[Astoria, Oregon|Astoria]].<ref name="OR-Map"/> Through [[North Portland, Oregon|North Portland]], the freeway runs below street level until it crosses the [[Columbia Slough]] to bisect [[Delta Park]]. {{nowrap|I-5}} continues across [[Hayden Island, Portland, Oregon|Hayden Island]] to the [[Interstate Bridge]], a pair of [[vertical-lift bridge]]s which carry the highway over the [[Columbia River]] into Washington state.<ref name="google"/><ref>{{cite news |last=Macuk |first=Anthony |date=September 19, 2021 |title=Keeping the Interstate 5 Bridge up and running |url=https://www.columbian.com/news/2021/sep/19/keeping-the-interstate-5-bridge-up-and-running/ |work=[[The Columbian]] |accessdate=December 17, 2021 |archive-date=December 17, 2021 |archive-url=https://web.archive.org/web/20211217081417/https://www.columbian.com/news/2021/sep/19/keeping-the-interstate-5-bridge-up-and-running/ |url-status=live }}</ref>

===Washington===
{{main|Interstate 5 in Washington}}

The highway enters [[Vancouver, Washington|Vancouver]] at the north end of the Interstate Bridge and immediately intersects [[Washington State Route 14]] near the [[Fort Vancouver National Historic Site]]. The freeway passes near downtown Vancouver and continues north through the city's suburbs before being rejoined by I-205 at [[Salmon Creek, Washington|Salmon Creek]]. I-5 travels north along the Columbia River to [[Kelso, Washington|Kelso]] and [[Longview, Washington|Longview]], where it switches to following the [[Cowlitz River]] between the [[Willapa Hills]] and Cascade foothills. The freeway then turns northwest to traverse a [[prairie]] and the adjacent cities of [[Chehalis, Washington|Chehalis]] and [[Centralia, Washington|Centralia]] while concurrent with [[U.S. Route 12|US&nbsp;12]].<ref name="google"/><ref name="WSDOT-Map">{{cite WSDOT map |year=2014 |accessdate=December 17, 2021}}</ref>

I-5 continues north to a junction with [[U.S. Route 101|US&nbsp;101]] in [[Tumwater, Washington|Tumwater]], near [[Olympia, Washington|Olympia]] and the [[Washington State Capitol|state capitol campus]]. The freeway skirts the southeast side of downtown Olympia and turns east to cross [[Joint Base Lewis–McChord]] (formerly [[Fort Lewis (Washington)|Fort Lewis]] and [[McChord Field|McChord Air Force Base]]). I-5 then turns north to enter [[Tacoma, Washington|Tacoma]] but bends east to intersect [[Interstate 705|I-705]], a short spur into [[downtown Tacoma]]. The freeway turns north again after leaving Tacoma and its [[Port of Tacoma|nearby seaport]] near [[Fife, Washington|Fife]] to traverse the suburbs of [[King County, Washington|South King County]]. I-5 intersects its eastern bypass of [[Seattle]], [[Interstate 405 (Washington)|I-405]], in [[Tukwila, Washington|Tukwila]] near [[Seattle–Tacoma International Airport]].<ref name="WSDOT-Map"/>

The freeway generally follows the [[Green River (Duwamish River tributary)|Green]] and [[Duwamish River|Duwamish]] rivers into Seattle, passing [[Boeing Field]] and the [[Industrial District, Seattle|industrial district]] in the process. I-5 intersects [[Interstate 90|I-90]] near Seattle's [[Chinatown–International District, Seattle|Chinatown–International District]] on the south side of [[downtown Seattle]]. The freeway turns northwest and bisects downtown Seattle in a trench, with some sections covered by [[Freeway Park]] and the [[Washington State Convention Center]].<ref>{{cite news |last=Dorpat |first=Paul |author-link=Paul Dorpat |date=May 5, 2012 |title=Clearing the path for Seattle's I-5 ditch, 1961 |url=https://www.seattletimes.com/pacific-nw-magazine/clearing-the-path-for-seattle-s-i-5-ditch-1961/ |work=The Seattle Times |accessdate=December 17, 2021 |archive-date=December 17, 2021 |archive-url=https://web.archive.org/web/20211217084258/https://www.seattletimes.com/pacific-nw-magazine/clearing-the-path-for-seattle-s-i-5-ditch-1961/ |url-status=live }}</ref> It then turns north to intersect [[Washington State Route 520]] near [[Eastlake, Seattle|Eastlake]] and crosses the [[Ship Canal Bridge]] over [[Portage Bay]], which lies between [[Lake Union]] and [[Lake Washington]]. I-5 continues through northern Seattle, passing the [[University District, Seattle|University District]] near the [[University of Washington]] campus and [[Green Lake (Seattle)|Green Lake]] before leaving the city.<ref name="WSDOT-Map"/> The section between downtown Seattle and [[Northgate, Seattle|Northgate]] includes a set of [[reversible lane|reversible express lanes]] that add extra capacity in the peak direction of travel.<ref>{{cite news |last=Giordano |first=Lizz |date=July 22, 2019 |title=A driver can dream: Can I-5 express lanes be more nimble? |url=https://www.heraldnet.com/news/a-driver-can-dream-can-i-5-express-lanes-be-more-nimble/ |work=[[The Everett Herald]] |accessdate=December 17, 2021 |archive-date=November 28, 2021 |archive-url=https://web.archive.org/web/20211128103107/https://www.heraldnet.com/news/a-driver-can-dream-can-i-5-express-lanes-be-more-nimble/ |url-status=live }}</ref>

I-5 continues through the northern suburbs of Seattle and turns northeasterly in [[Lynnwood, Washington|Lynnwood]], where it is rejoined by I-405, which serves the [[Eastside (King County, Washington)|Eastside]] region. The freeway travels north through [[Everett, Washington|Everett]], skirting the city's downtown and intersecting [[U.S. Route 2|US&nbsp;2]], and leaves the [[Seattle metropolitan area]] for the rural [[Skagit Valley]]. I-5 descends into the valley and travels through [[Mount Vernon, Washington|Mount Vernon]] and [[Burlington, Washington|Burlington]] before climbing into the [[Chuckanut Mountains]], where it turns west towards [[Bellingham Bay]] (part of the [[Salish Sea]]). The freeway travels around downtown [[Bellingham, Washington|Bellingham]] and turns northwest to continue across the rural [[Fraser Lowland]]. I-5 terminates at the [[Peace Arch Border Crossing]] on the [[Canada–United States border|Canadian border]], adjacent to the [[Peace Arch|eponymous monument]], in [[Blaine, Washington|Blaine]]. The highway becomes [[British Columbia Highway 99]], which continues northwest to [[Vancouver]].<ref name="WSDOT-Map"/>