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Interstate 5
Main route of the Interstate Highway System
Length: 1381. The Dwight D Eisenhower National System of Interstate and Defense Highways, commonly called the Interstate Highway System (or simply the Interstate System) 29 mi[1] (2222. A mile is a unit of Length, usually used to measure Distance, in a number of different systems including Imperial units United States 97 km)
Formed: 1957
South end: MX 1 at Mexican border in San Ysidro, CA
Major
junctions:		 I-8 in San Diego, CA
I-10 in Los Angeles, CA
I-80 in Sacramento, CA
I-84 in Portland, OR
I-90 in Seattle, WA
North end: BC 99 at Canadian border in Blaine, WA
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Interstate 5 (abbreviated I-5) is the main Interstate highway on the West Coast of the United States, paralleling the Pacific Ocean from Washington to California and serving some of the largest cities of the western part of the country, including Seattle, Portland, Oregon, Sacramento, Los Angeles and San Diego. The kilometre ( American spelling: kilometer) symbol km is a unit of Length in the Metric system, equal to one thousand Mexican Federal Highway (carretera federal No 1 follows the length of the Baja California Peninsula from Cabo San Lucas ( BCS San Ysidro is a community within the city of San Diego California. Interstate 10 ( I-10) is the southernmost east-west coast-to-coast Interstate highway in the United States. Los Angeles (lɑˈsændʒələs los ˈaŋxeles in Spanish) is the largest City in the state of California and the American West Interstate 80 (I-80 is the second-longest Interstate Highway in the United States (after I-90) In the US state of Oregon, Interstate 84 travels east-west following the Columbia River and the rough path of the old Oregon Trail Portland is a city located in the Northwestern United States, near the Confluence of the Willamette and Columbia rivers Interstate 90 (I-90 is the longest interstate highway in the United States at nearly 3100 miles (5000 kilometers Highway 99 is the major north-south artery through Metro Vancouver. The Canada – United States border is the international Border between Canada and the United States. Blaine is a city in Whatcom County, Washington, United States. The Dwight D Eisenhower National System of Interstate and Defense Highways, commonly called the Interstate Highway System (or simply the Interstate System) The " West Coast " " Western Seaboard " or " Pacific Seaboard " are terms for the westernmost coastal states of the Western United States The Pacific Ocean is the largest of the Earth 's Oceanic divisions Washington ( is a state in the Pacific Northwest region of the United States. California ( is a US state on the West Coast of the United States, along the Pacific Ocean. Portland is a city located in the Northwestern United States, near the Confluence of the Willamette and Columbia rivers Los Angeles (lɑˈsændʒələs los ˈaŋxeles in Spanish) is the largest City in the state of California and the American West Its odd number indicates that it is a north-south highway. In Mathematics, the parity of an object states whether it is even or odd Its southern terminus is at the international border between the United States and Mexico in the San Diego community of San Ysidro, California. The United States of America —commonly referred to as the The United Mexican States ( or commonly Mexico (ˈmɛksɪkoʊ () is a federal constitutional Republic in North America. San Ysidro is a community within the city of San Diego California. Its northern terminus is at the international border between the United States and Canada at the Peace Arch in Blaine, Washington. The Canada – United States border is the international Border between Canada and the United States. The United States of America —commonly referred to as the Country to "Dominion of Canada" or "Canadian Federation" or anything else please read the Talk Page The Peace Arch is a Monument situated on the Canada – United States border between the communities of Blaine, Washington and Surrey Blaine is a city in Whatcom County, Washington, United States. I-5 is the only Interstate highway to touch both the Canadian and Mexican borders. Country to "Dominion of Canada" or "Canadian Federation" or anything else please read the Talk Page The United Mexican States ( or commonly Mexico (ˈmɛksɪkoʊ () is a federal constitutional Republic in North America. At its southern end, I-5 continues into adjacent Tijuana as Mexico Federal Highway 1. Tijuana (ˌtiːəˈwɑːnə Spanish, ti'xwana|ti'ʍana is the largest city of the Mexican state of Baja California, situated on the U Mexican Federal Highway (carretera federal No 1 follows the length of the Baja California Peninsula from Cabo San Lucas ( BCS On its north side, I-5 continues into Vancouver, Canada as Highway 99. Vancouver (vænˈkuːvɚ is a coastal Highway 99 is the major north-south artery through Metro Vancouver.

This highway links to control cities in California (San Diego, Los Angeles, San Francisco, Sacramento, and Redding), Oregon (Medford, Eugene, Salem, and Portland), and Washington (Tacoma, Seattle, Everett, Mount Vernon, Bellingham). A control city is a city or locality posted on a Traffic sign indicating forward destinations on a certain route California ( is a US state on the West Coast of the United States, along the Pacific Ocean. Los Angeles (lɑˈsændʒələs los ˈaŋxeles in Spanish) is the largest City in the state of California and the American West The City and County of San Francisco is the fourth most populous city Redding is a city in Northern California. It is the County seat of Shasta County California, USA Oregon ( is a state in the Pacific Northwest region of the United States. Medford is a city in Jackson County, Oregon, United States. As of 2007 the city had a total population of 75675 and a Metropolitan area population The city of Eugene ( "yoo-JEEN") is the County seat of Lane County, Oregon, Salem (ˈseɪləm is the Capital of the US state of Oregon, and the County seat of Marion County. Portland is a city located in the Northwestern United States, near the Confluence of the Willamette and Columbia rivers Washington ( is a state in the Pacific Northwest region of the United States. Everett is the County seat and largest city in Snohomish County, Washington located north of Seattle. Mount Vernon is a city in Skagit County, Washington, United States. Bellingham, Washington is the County seat of Whatcom County in the U Vancouver, British Columbia, is also a control city on Interstate 5 from the Seattle-Tacoma area to the northern terminus at the Canadian border. Vancouver (vænˈkuːvɚ is a coastal British Columbia (ˌbrɪtɨʃ kəˈlʌmbiə ( BC) ( (la Colombie-Britannique C

Notably, a control city not directly linked by this highway is San Francisco, which is about 80 miles (130 km) west of I-5. The City and County of San Francisco is the fourth most populous city To the south, Interstate 580 splits from I-5 towards San Francisco, while, to the north, Interstate 505 cuts south to Interstate 80, which serves that city. Interstate 505 (I-505 is an Interstate highway in California between Interstate 80 in Vacaville and Interstate 5. Interstate 80 (I-80 is the second-longest Interstate Highway in the United States (after I-90) That routing, via I-580, I-80 and I-505, was once Interstate 5W.

Along with Interstate 8, Interstate 10, Interstate 15, Interstate 40, and U.S. Route 101, I-5 serves as one of the primary roads that link the Los Angeles/San Diego Metropolitan areas to the rest of the nation. Interstate 10 ( I-10) is the southernmost east-west coast-to-coast Interstate highway in the United States. Interstate 15 (I-15 is the fourth-longest north-south transcontinental interstate highway in the United States, traveling through the states of California In the US state of California, Interstate 40 has its western terminus in Barstow. The Greater Los Angeles Area, or the Southland, (not to be confused with the Los Angeles Metro Area which includes only Los Angeles and

Contents

Route description

Lengths
mi[1] km
CA 796. A mile is a unit of Length, usually used to measure Distance, in a number of different systems including Imperial units United States The kilometre ( American spelling: kilometer) symbol km is a unit of Length in the Metric system, equal to one thousand Route description Southern California See also San Diego Freeway, Santa Ana Freeway, Golden State Freeway Interstate 5 starts 53 1281. 89
OR 308. In the US state of Oregon, Interstate 5 traverses across the state passing through the major cities of Portland, Salem, Eugene, 14 495. 90
WA 276. Interstate 5 in Washington (I-5 is a highway in the US state of Washington that extends from its border with Oregon to its border with Canada 62 445. 18
Total 1381. 29 2222. 97
Major cities
Bolded cities are officially-designated control cities for signs

California

Main article: Interstate 5 in California

The most southerly point of Interstate 5 is at the United States-Mexico border at the San Ysidro border crossing, one of the busiest in the world. A control city is a city or locality posted on a Traffic sign indicating forward destinations on a certain route Founded in 1869 Santa Ana ( is the most populous city in Orange County California and is the County seat and a city of about 353184 people. Los Angeles (lɑˈsændʒələs los ˈaŋxeles in Spanish) is the largest City in the state of California and the American West The City and County of San Francisco is the fourth most populous city Interstate 505 (I-505 is an Interstate highway in California between Interstate 80 in Vacaville and Interstate 5. Interstate 80 (I-80 is the second-longest Interstate Highway in the United States (after I-90) Stockton is a City in California and the seat of San Joaquin County (the fifth largest agricultural county in the United States Redding is a city in Northern California. It is the County seat of Shasta County California, USA Mount Shasta is a city in Siskiyou County California, located at around 3600 ft (1100 m on the flanks of Mount Shasta, a prominent northern California landmark Weed is a city located in Siskiyou County California. As of the 2000 Census, the town had a total population of 2978 Yreka (waɪˈriːkə "wye-REE-ka" is the County seat of Siskiyou County California, United States Ashland is a city in Jackson County, Oregon, United States, near Interstate 5 and the California Medford is a city in Jackson County, Oregon, United States. As of 2007 the city had a total population of 75675 and a Metropolitan area population Grants Pass is a city in and the County seat of Josephine County, Oregon, United States. Roseburg is a city in the US state of Oregon. It is the County seat of Douglas County. The city of Eugene ( "yoo-JEEN") is the County seat of Lane County, Oregon, Albany is a city in Benton and Linn Counties in the western part of the U Salem (ˈseɪləm is the Capital of the US state of Oregon, and the County seat of Marion County. Portland is a city located in the Northwestern United States, near the Confluence of the Willamette and Columbia rivers Vancouver is a city on the north bank of the Columbia River in the U Olympia is the Capital of Washington and is the County seat of Thurston County. Everett is the County seat and largest city in Snohomish County, Washington located north of Seattle. Mount Vernon is a city in Skagit County, Washington, United States. Bellingham, Washington is the County seat of Whatcom County in the U Vancouver (vænˈkuːvɚ is a coastal Highway 99 is the major north-south artery through Metro Vancouver. Route description Southern California See also San Diego Freeway, Santa Ana Freeway, Golden State Freeway Interstate 5 starts San Ysidro is a community within the city of San Diego California. [2] Beginning at the border in San Ysidro, which is part of the city of San Diego, as the John J. Montgomery Freeway, I-5 goes through the suburbs of National City and Chula Vista before reaching downtown San Diego. Route description Southern California See also San Diego Freeway, Santa Ana Freeway, Golden State Freeway Interstate 5 starts South San Jose (cropjpg||thumb|A suburban development in San Jose California. National City is a city in San Diego County, California, United States. Chula Vista ( is a city in southern San Diego County, California, United States. It then parallels the Pacific coastline, going through the northern suburbs of San Diego, bisecting the University of California, San Diego campus, before passing through the 28 miles (45 km) of Marine Corps Base Camp Pendleton in northern San Diego County. The University of California San Diego (popularly known as UC San Diego or UCSD) is a public Research university in San Diego, California Marine Corps Base Camp Pendleton is the major West Coast base of the United States Marine Corps and serves as its prime amphibious training base San Diego County is a County located on the Pacific Ocean in the far southwest of the U Here I-5 is also known as the San Diego Freeway.

At Dana Point, I-5 turns inland and heads due north through Mission Viejo to the El Toro Y interchange in southeastern Irvine. Dana Point is a city located in southern Orange County California. The El Toro "Y" is a freeway interchange in southern Orange County California where the Santa Ana Freeway, Interstate 5, and the San Diego Irvine ( is an incorporated city in Orange County California, United States I-5 becomes the Santa Ana Freeway as it runs southeast to northwest, passing through major cities and suburbs in Orange and Southern Los Angeles counties. The Santa Ana Freeway is one of the principal Freeways in Southern California, connecting Los Angeles, California and its southeastern suburbs Orange County is a county in Southern California, United States. Los Angeles County is a county in California and is by far the most populous county in the United States. Angelenos refer to it as "the 5" or as the Santa Ana Freeway. From this point, the San Diego Freeway continues northward as I-405.

When the freeway reaches the East Los Angeles Interchange one mile (1. The East Los Angeles Interchange complex is the busiest Freeway interchange in the world 6 km) east of downtown Los Angeles, I-5 becomes the Golden State Freeway. Los Angeles (lɑˈsændʒələs los ˈaŋxeles in Spanish) is the largest City in the state of California and the American West The Golden State Freeway is a north-south Freeway running through Kern County and Los Angeles County California. The route continues through the San Fernando Valley and then crosses the Newhall Pass through the Santa Susana Mountains into the Santa Clarita Valley. The San Fernando Valley or The Valley is an urbanized Valley located in the north-western section of the city of Los Angeles California, United States Newhall Pass is a Mountain pass in Los Angeles County California, USA. The Santa Susana Mountains are a transverse range of mountains in southern California, north of the city of Los Angeles, in the United States The Santa Clarita Valley is the valley of the Santa Clara River in Southern California. For about a four-mile (6 km) stretch between Santa Clarita Valley and the Pyramid Lake, the northbound and southbound lanes separate and actually invert, with the southbound lanes being to the east of the northbound ones. The Santa Clarita Valley is the valley of the Santa Clara River in Southern California. Pyramid Lake is also a Lake formed by Pyramid Dam on Piru Creek, near Castaic California. Beginning at that point, the Golden State Freeway sharply rises to the north through the Grapevine to eventually reach the second-highest point of its entire length, the Tejon Pass (elevation 4,183 ft. The Ridge Route, officially the Castaic-Tejon Route, is a narrow two-lane Highway in the northern Greater Los Angeles Area of the U The Tejon Pass (teɪˈhoʊn is a Mountain pass at the southwest end of the Tehachapi Mountains linking Southern to Central California (1,275 m)) through the Tehachapi Mountains. The Tehachapi Mountains (təˈhætʃəˌpi are a short transverse range in southern California in the United States, running SW-NE connecting Path 26 power lines generally parallel the freeway along this stretch. Path 26 is a set of three 500 kV power lines that forms Southern California Edison 's (SCE intertie with Pacific Gas & Electric (PG&E to the Electric power transmission, a process in the delivery of Electricity to consumers is the bulk transfer of electrical power The freeway then sharply descends for 12 miles (19 km) at Tejon Pass to around 1,600 feet (490 m) at Grapevine near the southernmost point of the San Joaquin Valley, approximately 30 mi (48 km) south of Bakersfield and 4 mi (6 km) south from where State Route 99 splits away from it in Wheeler Ridge. The San Joaquin Valley (ˌsæn wɑːˈkiːn refers to the area of the Central Valley of California that lies south of the Sacramento-San Joaquin Delta State Route 99 (SR 99 commonly known as Highway 99 or 99, is a north-south State highway in the U Wheeler Ridge is a small unincorporated town in Kern County California.

I-5 south approaching Weed and Mt. Shasta.
I-5 south approaching Weed and Mt. Shasta. Weed is a city located in Siskiyou County California. As of the 2000 Census, the town had a total population of 2978 Mount Shasta ( Úytaahkoo, Karuk) or the "White Mountain" in English a 14179-foot (4322 m Stratovolcano, is the second-highest peak in the

From Highway 99 to south of Tracy, I-5 skirts along the far more remote western edge of the great Central Valley, and thus here is removed from population centers such as Bakersfield and Fresno with other state highways providing connections. Tracy is a city in San Joaquin County, California, in the United States. The Central Valley is a large flat valley that dominates the central portion of the U Interstate 580 splits off from I-5 at a point south of Tracy, providing a loop-route connection to the San Francisco Bay Area. The San Francisco Bay Area, commonly known as the Bay Area, or the Bay, is a geographically and ethnically diverse metropolitan region that surrounds the After passing Tracy, I-5 heads north through Stockton and Sacramento before turning west to Woodland. Stockton is a City in California and the seat of San Joaquin County (the fifth largest agricultural county in the United States Woodland (formerly By Hell and Yolo City) is the County seat of Yolo County California. At Woodland, the interstate heads northwest again towards Dunnigan, where it converges with Interstate 505. Dunnigan is an unincorporated community in Yolo County, California on Interstate 5. Interstate 505 (I-505 is an Interstate highway in California between Interstate 80 in Vacaville and Interstate 5.

From Dunnigan, I-5 skirts north along the western edge of the Sacramento Valley to Red Bluff. The Sacramento Valley is the portion of the California Central Valley that lies to the north of the San Joaquin-Sacramento Delta in the U Red Bluff is the County seat of Tehama County California. As of the 2000 census the incorporated city had a total Population of 13147 but it is currently I-5 then enters the Shasta Cascade region, passing through Redding and Shasta Lake before climbing up to near the foot of Mount Shasta. The Shasta Cascade region of California is located in the northeastern and north-central sections of the state bordering Oregon and Nevada, including far Redding is a city in Northern California. It is the County seat of Shasta County California, USA Shasta Lake is a reservoir created by the building of Shasta Dam in California, USA. Mount Shasta ( Úytaahkoo, Karuk) or the "White Mountain" in English a 14179-foot (4322 m Stratovolcano, is the second-highest peak in the The interstate then travels to Weed and Yreka before reaching the Oregon border. Weed is a city located in Siskiyou County California. As of the 2000 Census, the town had a total population of 2978 Yreka (waɪˈriːkə "wye-REE-ka" is the County seat of Siskiyou County California, United States

Oregon

Main article: Interstate 5 in Oregon

About 3 mi (5 km) north of the California border, the highway crosses 4,310 feet (1,310 m) Siskiyou Summit, the highest point on I-5. In the US state of Oregon, Interstate 5 traverses across the state passing through the major cities of Portland, Salem, Eugene, Siskiyou Summit (el) is a Mountain pass in the Siskiyou Mountains in the U Dropping down into Rogue River valley through Oregon's southern mountains and towns such as Ashland, Medford and Grants Pass. Ashland is a city in Jackson County, Oregon, United States, near Interstate 5 and the California Medford is a city in Jackson County, Oregon, United States. As of 2007 the city had a total population of 75675 and a Metropolitan area population Grants Pass is a city in and the County seat of Josephine County, Oregon, United States. Turning north across three passes to the Umpqua Valley and through Roseburg, the mountains tend to turn into hills, and as it reaches Cottage Grove, the road enters the Willamette River Valley. Roseburg is a city in the US state of Oregon. It is the County seat of Douglas County. The Willamette Valley () is the region in northwest Oregon in the United States that surrounds the Willamette River as it proceeds northward from its emergence At Eugene the highway intersects with the short Interstate 105. Oregon Route 126 is a State highway which connects central and western Oregon and serves the southern Willamette Valley The interstate then heads almost due north, skirting Albany and Corvallis, and passes through Salem. Albany is a city in Benton and Linn Counties in the western part of the U Corvallis (kɔrˈvælɪs is a City located in central western Oregon, United States. Salem (ˈseɪləm is the Capital of the US state of Oregon, and the County seat of Marion County. There were plans to build a spur into Salem, Oregon, called Interstate 305. Salem (ˈseɪləm is the Capital of the US state of Oregon, and the County seat of Marion County. Oregon Route 99E Business is a Business route through Salem Oregon for Oregon Route 99E, which bypasses downtown via Interstate 5.

In downtown Portland, I-5 runs adjacent to the Willamette River and passes by the Rose Garden Arena (center), and Oregon Convention Center (right).
In downtown Portland, I-5 runs adjacent to the Willamette River and passes by the Rose Garden Arena (center), and Oregon Convention Center (right). The Willamette River (pronounced) is a Tributary of the Columbia River. The Rose Garden, commonly known as the Rose Garden Arena, is the primary indoor Sports arena in Portland Oregon, United States The Oregon Convention Center is a Convention center in Portland Oregon.

Just north of Salem, between mile marks 259 and 260, placed in the median is a sign where the 45th parallel crosses I-5. It bears the words "45 Parallel half way between the Equator and the North Pole".

The highway then tracks a little to the northeast, Interstate 205 splits off south of the Portland metro area. Interstate 205 (I-205 is a loop route that serves the Portland Oregon - Vancouver Washington metropolitan area Portland is a city located in the Northwestern United States, near the Confluence of the Willamette and Columbia rivers From here it passes up through Tualatin and Tigard along former U.S. Route 99W before hitting the southern terminus of I-405 and the Marquam Bridge. Oregon Route 99W is a State-numbered route in Oregon, United States that runs from OR 99 and OR 99E in Junction City Interstate 405 (I-405 also known as the Stadium Freeway No 61) is a short Interstate highway in Portland Oregon. The Marquam Bridge is a double deck Cantilever bridge that carries Interstate 5 traffic across the Willamette River south of downtown Portland Oregon Also planned was a spur in Portland off I-405, called Interstate 505, but it was never built and has been removed from city plans. Portland is a city located in the Northwestern United States, near the Confluence of the Willamette and Columbia rivers Interstate 505 (I-505 in Oregon was an intended 144 mile freeway spur in northwest Portland that would have connected Interstate 405 with St A stub of I-505 exists as a long exit ramp to U.S. Route 30. US Route 30 is an east-west main route of the system of United States Numbered Highways, with the highway traveling across the northern tier of the country

After crossing the Willamette River on the Marquam Bridge, I-5 has junctions at the western terminus of Interstate 84 and the northern terminus of I-405. The Marquam Bridge is a double deck Cantilever bridge that carries Interstate 5 traffic across the Willamette River south of downtown Portland Oregon In the US state of Oregon, Interstate 84 travels east-west following the Columbia River and the rough path of the old Oregon Trail It then continues through the northern parts of the city of Portland, and crosses into Washington via the Interstate Bridge. The Interstate Bridge (also Columbia River Interstate Bridge, I-5 Bridge, Portland-Vancouver Interstate Bridge) is a pair of nearly identical steel

I-5 bridge over the Nisqually River, near Tacoma, Washington
I-5 bridge over the Nisqually River, near Tacoma, Washington
Interstate 5, looking north from Two Union Square in Seattle, Washington.
Interstate 5, looking north from Two Union Square in Seattle, Washington. The Nisqually River (nɪskwɑːli is a river in west central Washington in the United States, approximately 81 mi (130 km long Two Union Square is a Skyscraper in Seattle Washington. It is located on the southeast corner of the intersection of Union Street and Sixth Avenue in the core

Washington

Main article: Interstate 5 in Washington

The highway begins in Washington over the Columbia River and drops down into the city of Vancouver. Interstate 5 in Washington (I-5 is a highway in the US state of Washington that extends from its border with Oregon to its border with Canada The Columbia River (known as Vancouver is a city on the north bank of the Columbia River in the U About seven miles (11 km) into the state, it reaches the northern terminus of I-205, which is on the eastern edge of the Portland-Vancouver metropolitan area. Interstate 205 (I-205 is a loop route that serves the Portland Oregon - Vancouver Washington metropolitan area It then tracks north by northwest to Kelso and Longview, at which point it ceases paralleling a large bend of the Columbia. Kelso is a city in Cowlitz County, Washington, United States. Longview is a city in Cowlitz County, Washington, United States. Continuing north through the Willapa Hills, the freeway eventually reaches Olympia, where it bends sharply east, after that it goes through Fort Lewis and by McChord AFB, then finally Tacoma where it bends sharply north again to reach Seattle. The Willapa Hills is a range of hills in Pacific, Wahkiakum, and Lewis counties in Washington State. Olympia is the Capital of Washington and is the County seat of Thurston County. Fort Lewis is a Census-designated place and United States Army post located in Pierce County Washington, United States. McChord Air Force Base is a United States Air Force base in Pierce County Washington. The Ship Canal Bridge carries it over Portage Bay in Seattle. The Ship Canal Bridge carries Interstate 5 over Seattle 's Portage Bay (part of the Lake Washington Ship Canal, after which it is named Portage Bay is an arm of Seattle Washington 's Lake Union and is part of the Lake Washington Ship Canal. The freeway makes its way out of the Seattle/Tacoma/Everett metro area, crosses the floodplains of three rivers, through the Skagit Valley and the Mount Vernon-Anacortes Metropolitan Area to the northern city of Bellingham to arrive at the Peace Arch Canadian border crossing between Blaine, Washington, and Surrey, British Columbia. Everett is the County seat and largest city in Snohomish County, Washington located north of Seattle. Bellingham, Washington is the County seat of Whatcom County in the U The Peace Arch is a Monument situated on the Canada – United States border between the communities of Blaine, Washington and Surrey Blaine is a city in Whatcom County, Washington, United States. Surrey is a Canadian city in the Province of British Columbia that lies within the Metro Vancouver Highway 99 continues northwesterly from the border into Vancouver, B.C.

History

An extensive section of this highway (over 600 miles (970 km)), from approximately Stockton, California, to Portland, Oregon, follows very closely the track of the Siskiyou Trail. Highway 99 is the major north-south artery through Metro Vancouver. Vancouver (vænˈkuːvɚ is a coastal Stockton is a City in California and the seat of San Joaquin County (the fifth largest agricultural county in the United States Portland is a city located in the Northwestern United States, near the Confluence of the Willamette and Columbia rivers The Siskiyou Trail stretched from California's Central Valley to Oregon's Willamette Valley; modern-day Interstate 5 follows this pioneer path [3] The Siskiyou Trail was based on an ancient network of Native American footpaths connecting the Pacific Northwest with California's Central Valley. Native Americans in the United States are the indigenous peoples from the regions of North America now encompassed by the continental United States The Pacific Northwest is a region in the northwest of North America (the term refers to the land not the ocean The Central Valley is a large flat valley that dominates the central portion of the U By the 1820s, trappers from the Hudson's Bay Company were the first non-Native Americans to use the route of today's I-5 to move between today's Washington State and California. During the second half of the 19th century, mule trains, stagecoaches, and the Central Pacific railroad also followed the route of the Siskiyou Trail. [3] By the early 20th century, pioneering automobile roads were built along the path of the Siskiyou Trail, notably the Pacific Highway. Pacific Highway is the name of several highways in the United States, either by legislation officially designating it as such or by common usage The Pacific Highway ran from British Columbia to San Diego, California, and was the immediate predecessor of much of U.S. Route 99. British Columbia (ˌbrɪtɨʃ kəˈlʌmbiə ( BC) ( (la Colombie-Britannique C US Route 99 was the main north-south highway on the West Coast of the United States until 1964 running from Calexico California, on the U The route of U. S. 99 was in turn used as a basis for much of the route of today's I-5.

In 1988, smoke from nearby field burning caused a 23-car pileup near Albany, Oregon, leading to 7 deaths and 37 injuries. Albany is a city in Benton and Linn Counties in the western part of the U This accident resulted in more regulation of field burning. [4]

Major intersections

Interstate 5 and Interstate 90 meeting in Seattle, Washington.
Interstate 5 and Interstate 90 meeting in Seattle, Washington. Interstate 90 (I-90 is the longest interstate highway in the United States at nearly 3100 miles (5000 kilometers

Auxiliary routes

I-5 will have a complete set of auxiliary routes (105, 205, 305. Interstate 80 (I-80 is the second-longest Interstate Highway in the United States (after I-90) Interstate 505 (I-505 is an Interstate highway in California between Interstate 80 in Vacaville and Interstate 5. Dunnigan is an unincorporated community in Yolo County, California on Interstate 5. Oregon Route 126 is a State highway which connects central and western Oregon and serves the southern Willamette Valley The city of Eugene ( "yoo-JEEN") is the County seat of Lane County, Oregon, Interstate 205 (I-205 is a loop route that serves the Portland Oregon - Vancouver Washington metropolitan area Tualatin (tuːˈɔːlətɨn is a city is located primarily in Washington County in the U Interstate 405 (I-405 also known as the Stadium Freeway No 61) is a short Interstate highway in Portland Oregon. Portland is a city located in the Northwestern United States, near the Confluence of the Willamette and Columbia rivers In the US state of Oregon, Interstate 84 travels east-west following the Columbia River and the rough path of the old Oregon Trail Portland is a city located in the Northwestern United States, near the Confluence of the Willamette and Columbia rivers Interstate 405 (I-405 also known as the Stadium Freeway No 61) is a short Interstate highway in Portland Oregon. Portland is a city located in the Northwestern United States, near the Confluence of the Willamette and Columbia rivers Interstate 205 (I-205 is a loop route that serves the Portland Oregon - Vancouver Washington metropolitan area Interstate 705 (abbreviated I-705) is a short interstate spur route of Interstate 5 located entirely within Tacoma Washington. Interstate 405 (abbreviated I-405, and colloquially referred to as 405 or four-oh-five) in Washington is a loop route that bypasses Tukwila (tʌkˈwɪlə is a city in King County, Washington, about 6 miles south of Seattle. Interstate 90 (I-90 is the longest interstate highway in the United States at nearly 3100 miles (5000 kilometers Interstate 405 (abbreviated I-405, and colloquially referred to as 405 or four-oh-five) in Washington is a loop route that bypasses Interstate 805 (I-805 - also referred to as "The 805" is a bypass Interstate highway running through the San Diego metropolitan area State Route 905 is a State highway in San Diego California that connects Interstate 5 and Interstate 805 in San Ysidro to the Los Angeles (lɑˈsændʒələs los ˈaŋxeles in Spanish) is the largest City in the state of California and the American West Interstate 105 (abbreviated I-105, and colloquially referred to as The 105 or the one-oh-five) is an interstate highway in southern Los Angeles (lɑˈsændʒələs los ˈaŋxeles in Spanish) is the largest City in the state of California and the American West Interstate 605 (I-605 - also referred to as "The 605" is a major north-south interstate Freeway of about 27 miles (43 km in length located in the Los Angeles (lɑˈsændʒələs los ˈaŋxeles in Spanish) is the largest City in the state of California and the American West Orange County is a county in Southern California, United States. Tracy is a city in San Joaquin County, California, in the United States. Interstate 205 (I-205 is a short route of the Interstate Highway System, connecting I-5 with I-580 in the San Joaquin Valley of the U Interstate 80 Business, called the Capital City Freeway in its entirety is a Business Loop of Interstate 80 through Sacramento. Zamora is an unincorporated community in rural Yolo County, California, U Interstate 505 (I-505 is an Interstate highway in California between Interstate 80 in Vacaville and Interstate 5. The city of Eugene ( "yoo-JEEN") is the County seat of Lane County, Oregon, Oregon Route 126 is a State highway which connects central and western Oregon and serves the southern Willamette Valley Portland is a city located in the Northwestern United States, near the Confluence of the Willamette and Columbia rivers Interstate 405 (I-405 also known as the Stadium Freeway No 61) is a short Interstate highway in Portland Oregon. Portland is a city located in the Northwestern United States, near the Confluence of the Willamette and Columbia rivers Vancouver is a city on the north bank of the Columbia River in the U Interstate 205 (I-205 is a loop route that serves the Portland Oregon - Vancouver Washington metropolitan area Interstate 705 (abbreviated I-705) is a short interstate spur route of Interstate 5 located entirely within Tacoma Washington. Interstate 405 (abbreviated I-405, and colloquially referred to as 405 or four-oh-five) in Washington is a loop route that bypasses . . 805, 905), with the completion of Interstate 905 in San Diego. State Route 905 is a State highway in San Diego California that connects Interstate 5 and Interstate 805 in San Ysidro to the Currently, I-80 and I-90 are the only two interstates to have complete sets of auxiliary routes. Interstate 80 (I-80 is the second-longest Interstate Highway in the United States (after I-90) Interstate 90 (I-90 is the longest interstate highway in the United States at nearly 3100 miles (5000 kilometers

References

  1. ^ a b Route Log and Finder List: Table 1 - Interstate System. FHWA. The Federal Highway Administration ( FHWA) is a division of the United States Department of Transportation that specializes in Highway transportation Retrieved on 2007-07-17. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 180 - Twelve inhabitants of Scillium in North Africa are executed for being Christians
  2. ^ Busiest border crossing
  3. ^ a b Museum of the Siskiyou Trail
  4. ^ http://extension.oregonstate.edu/oap/story.php?S_No=72&storyType=oap&cmd=pf
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Main Interstate Highways (multiples of 5 in pink)		 Interstate Highway marker
4 5 8 10 12 15 16 17 19 20 22 24 25 26 27 29 30
35 37 39 40 43 44 45 49 55 57 59 64 65 66 68 69
70 71 72 73 74 75 76 (W) 76 (E) 77 78 79 80 81 82
83 84 (W) 84 (E) 85 86 (W) 86 (E) 87 88 (W) 88 (E) 89 90
91 93 94 95 96 97 99 (238) H-1 H-2 H-3
Unsigned  A-1 A-2 A-3 A-4 PRI-1 PRI-2 PRI-3
Lists  Primary  Main - Intrastate - Suffixed - Future - Gaps
Auxiliary  Main - Future - Unsigned
Other  Standards - Business - Bypassed
The Dwight D Eisenhower National System of Interstate and Defense Highways, commonly called the Interstate Highway System (or simply the Interstate System) Interstate 4 (I-4 is a 13230-mile (21291 km intrastate Interstate Highway located entirely within the state of Florida, United States. Interstate 10 ( I-10) is the southernmost east-west coast-to-coast Interstate highway in the United States. Interstate 12 (I-12 is an intrastate Interstate highway located entirely within the state of Louisiana. Interstate 15 (I-15 is the fourth-longest north-south transcontinental interstate highway in the United States, traveling through the states of California Interstate 16 (I-16 also known as Jim Gillis Historic Savannah Parkway or State Route 404, is an intrastate Interstate highway located entirely Interstate 17 (I-17, also known as Black Canyon Freeway is an intrastate Interstate highway located entirely within the state of Arizona, United Interstate 19 (I-19 is an intrastate Interstate highway located entirely within the state of Arizona. Interstate 22 (I-22 when completed will follow the US Highway 78 corridor along a 213-mile (343-km route from Memphis Tennessee, to Birmingham Alabama Interstate 24 (I-24 is an Interstate highway in the eastern United States. Interstate 26 (I-26 is a nominally east-west (but physically more north-south main route of the Interstate Highway System in the Southeastern United States. For another freeway route in the United States with Interstate 27 as a "misreference" see U Interstate 29 (I-29 is an Interstate highway in the Midwestern United States. Interstate 35 (I-35 is a north–south Interstate highway in the central United States. Interstate 37 (I-37 is a intrastate Interstate Highway located within the U Interstate 39 (I-39 is an interstate highway in the Midwestern United States. Interstate 40 (I-40 is a major west-east Interstate highway in the United States Interstate 43 (I-43 is an intrastate Interstate highway located entirely within the state of Wisconsin. Interstate 44 (I-44 is an Interstate highway in the central United States. Interstate 45 (I-45 is an Interstate Highway located entirely within the U Interstate 49 (I-49 is an intrastate Interstate highway located entirely within the state of Louisiana in the southern United States. Interstate 55 (I-55 is an Interstate highway in the central United States. Interstate 57 (I-57 is an Interstate highway in the midwestern United States. Interstate 59 (I-59 is an Interstate highway in the southern United States. Interstate 64 (abbreviated I-64) is an Interstate Highway in the eastern United States. Interstate 65 (I-65 is a major Interstate Highway in the United States. Interstate 66 (I-66 is an Interstate highway in the eastern United States. Interstate 68 (I-68 is an Interstate Highway in the United States. Interstate 69 (I-69 is an Interstate Highway in the United States. Interstate 70 (I-70 is an Interstate highway in the United States that runs from Interstate 15 near Cove Fort Utah, to a Park and Ride Interstate 71 (I-71 is an Interstate Highway in the Great Lakes/Midwestern region of the United States. Interstate 72 (abbreviated I-72) is an Interstate highway in the midwestern United States. Interstate 73 (abbreviated I-73) is a main route of the Interstate Highway System, currently located entirely within the U Interstate 74 (abbreviated I-74) is an Interstate highway in the Midwestern and Southeastern United States. Interstate 75 (I-75 is a major north-south Interstate Highway in the midwest and southeastern United States. Interstate 76 (I-76 is an Interstate highway that runs from Interstate 70 in Arvada Colorado (near Denver) to an intersection with Interstate Interstate 76 (abbreviated I-76) is an Interstate Highway in the United States, running 435 miles (700 km from an interchange with Interstate 71 Interstate 77 (abbreviated I-77) is an Interstate highway in the eastern United States. Route description Pennsylvania See also Interstate 78 in Pennsylvania I-78 begins at a directional-T interchange with Interstate Interstate 79 (abbreviated I-79) is an Interstate highway in the eastern United States, designated from Interstate 77 in Charleston West Interstate 80 (I-80 is the second-longest Interstate Highway in the United States (after I-90) Interstate 81 (abbreviated I-81) is an Interstate highway in the eastern part of the United States. Interstate 82 (I-82 is a Interstate Highway that extends from I-90 in Ellensburg Washington to I-84 near Umatilla Oregon Interstate 83 (abbreviated I-83) is an Interstate highway in the eastern United States. Interstate 84 (I-84 is an Interstate highway in the Western United States that runs from Portland Oregon (intersecting I-5) to Echo Interstate 84 (abbreviated I-84) is an Interstate highway extending from Dunmore Pennsylvania (near Scranton Pennsylvania) at an intersection Interstate 85 (I-85 is an Interstate highway in the southeastern United States. Interstate 86 (I-86 is an intrastate Interstate Highway, located entirely within the state of Idaho. Interstate 86 was once assigned to what is now Interstate 84 east of East Hartford, Connecticut. Interstate 87 (abbreviated I-87) is a 33349 mile (53670 km intrastate Interstate highway located entirely within the state of New York History Prior to its designation as an Interstate Highway the route was known as IL 5, and before that IL 190. Interstate 88 (I-88 is an Interstate highway entirely within the U Interstate 89 (abbreviated I-89) is an Interstate highway in the New England region of the United States. Interstate 90 (I-90 is the longest interstate highway in the United States at nearly 3100 miles (5000 kilometers Interstate 91 (abbreviated I-91) is an Interstate highway in the New England section of the United States. Interstate 93 (abbreviated I-93) is an Interstate highway in the New England section of the United States. Interstate 95 ( I-95) is the main Highway on the East Coast of the United States, paralleling the Atlantic Ocean from Maine to Interstate 96 (I-96 is an intrastate Interstate highway that is entirely within the U Interstate 97 (abbreviated I-97) is an intrastate Interstate highway located entirely within Anne Arundel County Maryland, United Interstate 99 (I-99 is a partially-completed main route of the Interstate Highway System in central Pennsylvania. Interstate 238 (I-238 is a short auxiliary route of the Interstate Highway System in the San Francisco Bay Area, California, United States. Interstate H-1 (abbreviated H-1) is the busiest Interstate highway in Hawaii, United States, located on the island of O‘ahu. Interstate H-2 (abbreviated H-2) is an intrastate Interstate highway located on the island of O‘ahu in Hawai‘i, USA Interstate H-3 (abbreviated H-3) is an intrastate Interstate highway located on the island of O‘ahu in the state of Hawai‘i, United There are four officially designated interstate highways in Alaska, even though Alaska is usually considered to have no interstates and the routes do not connect There are four officially designated interstate highways in Alaska, even though Alaska is usually considered to have no interstates and the routes do not connect There are four officially designated interstate highways in Alaska, even though Alaska is usually considered to have no interstates and the routes do not connect There are four officially designated interstate highways in Alaska, even though Alaska is usually considered to have no interstates and the routes do not connect PR-52 is a Freeway in Puerto Rico, United States. It runs from PR-1 in Río Piedras southwest until it intersects with highway PR-2 in Ponce PR-22 ( also part of unsigned Interstate PR2) is a 51-mile (83-km long Toll road in the north coast of Puerto Rico that connects the cities of San There are three officially designated Interstate Highways in Puerto Rico. Primary interstates are the major Interstate highways of the United States and are assigned a one or two-digit route number There are several intrastate Interstate Highways; that is Interstate Highways that are located entirely within one state Presently the Interstate Highway System includes four suffixed routes - the Interstate 35 split into Interstate 35E and Interstate 35W at Dallas-Fort The United States' Interstate Highway System is still being expanded For the most part the Interstate Highway System in the United States is a connected system with most roads completed The auxiliary Interstate Highways (also called 3-digit Interstate Highways) is an additional network of freeways of the Interstate Highway System. The following is a list of future auxiliary (three-digit Interstate Highway designations in the United States. Some auxiliary Interstate Highways are not signed typically because the routes are already known by another name and marking them could confuse motorists I-blank widesvg|90px|right]] Standards for Interstate Highways in the United States are defined by the American Association of State Highway and Transportation Officials List of Business Routes Interstate 5 |-| Business Loop | San Ysidro This is a list of highways mostly US Routes bypassed by Interstate Highways Unless otherwise specified designations are as of ca
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