Interstate 5 Business (Chehalis–Centralia, Washington)
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Business routes of Interstate 5 (I-5) exist in both
California California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...
and
Washington Washington most commonly refers to: * George Washington (1732–1799), the first president of the United States * Washington (state), a state in the Pacific Northwest of the United States * Washington, D.C., the capital of the United States ** A ...
. There are no business routes in
Oregon Oregon ( , ) is a U.S. state, state in the Pacific Northwest region of the United States. It is a part of the Western U.S., with the Columbia River delineating much of Oregon's northern boundary with Washington (state), Washington, while t ...
as that state does not assign such designations for any of its Interstate Highways. However,
Oregon Route 99 Oregon Route 99 is a state highway that runs between the southern border of Oregon, and the city of Junction City. Oregon Route 99 was formed from parts of the former U.S. Route 99; it shares much of its route with I-5, but much of it is al ...
(OR 99) essentially acts as a business route for most of Oregon, along with OR 99W and OR 99E, which also has its own business route in
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.


California

Interstate business routes in California are assigned by the
California Department of Transportation The California Department of Transportation (Caltrans) is an Executive (government), executive department of the U.S. state of California. The department is part of the Government of California#State agencies, cabinet-level California State Tran ...
(Caltrans), but are not maintained by Caltrans unless they overlay other routes of the state highway system. Local authorities may request route assignment from the Caltrans Transportation System Information Program, and all requests require approval of the executive committee of the
American Association of State Highway and Transportation Officials The American Association of State Highway and Transportation Officials (AASHTO) is a standards setting body which publishes specifications, test protocols, and guidelines that are used in highway A highway is any public or private road ...
(AASHTO).


Chula Vista business loop

Interstate 5 Business (I-5 Bus.) was a
business route A business route (or business loop, business spur, or city route) in the United States is a short special route that branches off a parent numbered highway at its beginning, continues through the central business district of a nearby city or to ...
of I-5 in San Ysidro,
Chula Vista Chula Vista ( ; , ) is a city in San Diego County, California, United States. It is the second-most populous city in the San Diego metropolitan area, the seventh-most populous city in Southern California, the 15th-most populous city in the ...
, and National City. I-5 Bus. followed the original routing of US Route 101 (US 101) along Beyer Boulevard, Broadway, Harbor Drive, and Pacific Highway. The route terminated at I-5 at both ends. The designation was assigned in the 1960s and removed in the 1990s.


San Diego business loop

Interstate 5 Business (I-5 Bus.) was a
business route A business route (or business loop, business spur, or city route) in the United States is a short special route that branches off a parent numbered highway at its beginning, continues through the central business district of a nearby city or to ...
of I-5 in
San Diego San Diego ( , ) is a city on the Pacific coast of Southern California, adjacent to the Mexico–United States border. With a population of over 1.4 million, it is the List of United States cities by population, eighth-most populous city in t ...
. I-5 Bus. followed the original routing of US 101 along Mission Bay Drive and terminated at I-5 at both ends. The designation was removed in late 2004 and early 2005.


Solana Beach


San Clemente


Irvine business spur

Interstate 5 Business (I-5 Bus.) is a business route of I-5, starting at I-5 in
Irvine Irvine may refer to: Places On Earth Antarctica *Irvine Glacier * Mount Irvine (Antarctica) Australia * Irvine Island * Mount Irvine, New South Wales Canada * Irvine, Alberta * Irvine Inlet, Nunavut Scotland *Irvine, North Ayrshire, Scotlan ...
and ending at Barranca Parkway in Irvine, traveling via
Jamboree Road Jamboree Road is a long major arterial road through Orange County, California, running through the cities of Newport Beach, Irvine, California, Irvine, Tustin, and Orange, California, Orange. Route description The southern terminus of Jamboree ...
. The spur intersects with State Route 261 (SR 261) adjacent to the northern terminus of the spur.


Glendale–San Fernando Valley business loop

Interstate 5 Business (I-5 Bus.) in Glendale,
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, and the
San Fernando Valley The San Fernando Valley, known locally as the Valley, is an urbanized valley in Los Angeles County, Los Angeles County, California. Situated to the north of the Los Angeles Basin, it comprises a large portion of Los Angeles, the Municipal corpo ...
was a business loop of I-5 that followed present-day
San Fernando Road San Fernando Road is a major street in the City of Los Angeles and Los Angeles County. Within the Burbank city limits it is signed as San Fernando Boulevard, and north of Newhall Pass it is signed as The Old Road. It was previously designat ...
in the 1970s. Prior to the construction of I-5, San Fernando Road was an alignment of US 6 and US 99.


Woodland business loop

Interstate 5 Business (I-5 Bus.) in
Woodland A woodland () is, in the broad sense, land covered with woody plants (trees and shrubs), or in a narrow sense, synonymous with wood (or in the U.S., the '' plurale tantum'' woods), a low-density forest forming open habitats with plenty of sunli ...
begins at I-5 exit 537, runs west on Main Street (known as County Road 22 R 22outside city limits), and then north on SR 16 (County Road 98
R 98 R98 may refer to: * R-98 (missile), a Soviet air-to-air missile * * , a destroyer of the Royal Navy * Renholdningsselskabet af 1898 Renholdningsselskabet af 1898 ( Danish for "The 1898 Cleansing Company"), commonly known as R98, is a Danish co ...
CR E7) to exit 541. ;Major intersections


Arbuckle business loop

Interstate 5 Business (I-5 Bus.) in Arbuckle, at , begins at I-5 exit 566, an interchange with no northbound reentry. The route runs seamlessly north from the offramp to Fifth Street through downtown Arbuckle, then turns west onto Freeway Underpass Road to exit 567, while Fifth Street continues north as Frontage Road ( CR 99W). Both interchanges are signed for "Frontage Road". ;Major intersections


Williams–Maxwell business loop

Interstate 5 Business (I-5 Bus.) in Williams begins at I-5 exit 575, runs north on Husted Road, and then northwest onto Frontage Road and Old Highway 99W, which runs along the west side of a former
Southern Pacific The Southern Pacific (or Espee from the railroad initials) was an American Class I railroad network that existed from 1865 to 1996 and operated largely in the Western United States. The system was operated by various companies under the names ...
(SP) line, now part of
Union Pacific Railroad The Union Pacific Railroad is a Railroad classes, Class I freight-hauling railroad that operates 8,300 locomotives over routes in 23 U.S. states west of Chicago and New Orleans. Union Pacific is the second largest railroad in the United Stat ...
(UP). Within downtown Williams, the route takes a reverse curve away from the tracks into Seventh Street where it intersects SR 20 Bus. but then returns to its previous trajectory before running under a bridge for SR 20, which has one connecting road between the two routes on the northwest corner. North of Williams, the route passes through the unincorporated community of Cortena, where it shifts from northwest to north. Entering
Maxwell Maxwell may refer to: People * Maxwell (surname), including a list of people and fictional characters with the name ** James Clerk Maxwell, mathematician and physicist * Justice Maxwell (disambiguation) * Maxwell baronets, in the Baronetage of N ...
the road makes another slight shift away from the former SP line, but not as far away as in downtown Williams. It intersects Oak Street and Maxwell-Colusa Road (the main west–east road in Maxwell), and then shifts back to its previous trajectory at a mobile home park north of North Street. I-5 Bus. continues along the west side of the tracks until ending at a half
diamond interchange A diamond interchange is a common type of road junction, used where a controlled-access highway crosses a minor road. Design The freeway itself is grade separation, grade-separated from the minor road, one crossing the other over a bridge. ...
with I-5 with only southbound offramp and northbound onramp at exit 588. Old Highway 99W simply continues northward as County Road 99W. ;Major intersections


Willows–Orland business loop

Interstate 5 Business (I-5 Bus.) is one of the longer business loops at that runs between
Willows Willows, also called sallows and osiers, of the genus ''Salix'', comprise around 350 species (plus numerous hybrids) of typically deciduous trees and shrubs, found primarily on moist soils in cold and temperate regions. Most species are known ...
and Orland, though most of the signage is as Historic Highway 99W. The route begins at exit 601 on CR 57 and turns east. The segment is merely from the northbound onramp before turning north onto Old Highway 99W, running along the west side of the same UP line mentioned in Williams and Maxwell. The route follows the historic U.S. Route past a bridge over a canal where it becomes South Tehama Street, and then North Tehama Street at the intersection with West and East Sycamore Avenues. At the intersection of West and East Wood Street (Biggs-Willows Road) is SR 162, he first major intersection with the business route and the only one in Willows outside of its southern terminus. North of SR 162, the North Tehama Street name fades away as route makes a slight northeast curve where it crosses a railroad spur leading to a
Johns Manville Johns Manville is an American company based in Denver, Colorado, that manufactures insulation, roofing materials and engineered products. For much of the 20th century, the then-titled Johns-Manville Corporation was the global leader in the ...
insulation plant and then curves back north again running closer to that UP line. Leaving Willows, I-5 Bus. passes through farmland, interrupted briefly by communities like Bluegum, where it curves away from the tracks to run along Walker Creek, only to cross a bridge over that creek and resumes hugging the side of the tracks again. The next community is
Artois Artois ( , ; ; Picard: ''Artoé;'' English adjective: ''Artesian'') is a region of northern France. Its territory covers an area of about 4,000 km2 and it has a population of about one million. Its principal cities include Arras (Dutch: ...
, where it moves northwest further away from the old SP line than it was in Willows but still turns back north again. Continuing its journey through rural
Glenn County Glenn County is a county located in the U.S. state of California. As of the 2020 census, the population was 28,917. The county seat is Willows. It is located in the Sacramento Valley, in the northern part of the California Central Valley. The ...
, I-5 Bus. passes through Grapit, then crosses a bridge over another canal to enter Greenwood. The route begins moving closer through the tracks as it continues through rural land and returns to the tracks after CR 20. The road returns to more rural setting as it enters Orland where it becomes Sixth Street and edges away from the tracks for local buildings on the east side. The intersection of Newville Road and Walker Street is where I-5 Bus. encounters SR 32. Two blocks later, the road hugs the side of the tracks again, and the road runs under an arch at a short bridge over the Stony Creek Irrigation Canal immediately south of the intersection with Almond Way. The tracks curve to the northeast away from the route just before the bridge over Hambright Creek where the road enters Wyo and then runs over a longer bridge over Stony Creek. After passing CR 9 then CR 8 on the east side, the business route turns left onto CR 7, while the former US 99W continues northward as "Highway 99W". Approximately west of there, I-5 Bus. ends at exit 621 on I-5. ;Major intersections


Red Bluff business loop

Interstate 5 Business (I-5 Bus.) in Red Bluff, at , has historically been part of both US 99 as well as US 99 Bus. It begins on I-5 at exit 647 (exit 647A southbound). The route runs along South Main Street ( CR A8), on the west side of an old UP line until after the intersection with the driveway to Red Bluff Shopping Center where it curves to the northeast and crosses under a trestle for that line. The route maintains that northeastern trajectory until just before it crosses a bridge over Reeds Creek, where the name changes to Main Street. At Oak Street and Antelope Boulevard, I-5 Bus. is joined by an overlap with SR 36. Two blocks north of there, northbound I-5 Bus. and westbound SR 36 has an intersection with Walnut Street ( CR A7) the road that leads to
Shasta College Shasta College is a public community college in Redding, California, with branch campuses in Burney, Weaverville, and Red Bluff. It was founded in 1950 and later moved to a much larger campus while the original campus became the new locatio ...
. Less than three blocks later, the backyard of businesses along the east side is a bend in the
Sacramento River The Sacramento River () is the principal river of Northern California in the United States and is the largest river in California. Rising in the Klamath Mountains, the river flows south for before reaching the Sacramento–San Joaquin River D ...
, and I-5 Bus. and SR 36 curve to the northeast just north of that bend at Dog Island Park. The routes run parallel to the former SP line again, but this time on the west side before approaching the intersection with Adobe Road. The northern terminus of SR 36 ends where that route heads west toward
Fortuna Fortuna (, equivalent to the Greek mythology, Greek goddess Tyche) is the goddess of fortune and the personification of luck in Religion in ancient Rome, Roman religion who, largely thanks to the Late Antique author Boethius, remained popular thr ...
, just before the bridge over Dibble Creek. The last intersection with both directions of I-5 Bus. is with Hess Road just before the route approaches the flyover interchange with I-5 at exit 651, which contains a southbound offramp and northbound onramp. The last intersection for northbound I-5 Bus. is with Via Del Roble just before the aforementioned onramp with I-5. ;Major intersections


Cottonwood


Anderson–Redding


Dunsmuir business loop

Interstate 5 Business (I-5 Bus.) is a
business route A business route (or business loop, business spur, or city route) in the United States is a short special route that branches off a parent numbered highway at its beginning, continues through the central business district of a nearby city or to ...
of I-5 in Dunsmuir. I-5 Bus. followed the original routing of US 99 along Dunsmuir Avenue at exits 729 and 732, but it also has an additional interchange at exit 730, where it switches over from the east side of I-5 to the west side. ;Route description I-5 Bus. begins at a trumpet interchange at Dunsmuir Avenue. The first sites along the road are a gas station and convenience store, two motels, and a self-storage facility. The route winds through the mountains of the southern outskirts of the city, passing by the Dunsmuir Lodge motel. Between the intersection with Katherine and Hill streets, it runs alongside the Dunsmuir Cemetery, officially entering the city limits halfway though. The route runs between Dunsmuir City Hall on the west side and Siskiyou County Sheriffs Office just before entering the Dunsmuir Historic Commercial District between Cedar and Spruce streets. Exit 730 is a partial diamond interchange on the northbound side where the off- and onramps do not connect to one another, and a southbound
right-in/right-out Right-in/right-out (RIRO) and left-in/left-out (LILO) refer to a type of three-way road intersection where turning movements of vehicles are restricted. A RIRO permits only right turns and a LILO permits only left turns. "Right-in" and "left-in" r ...
interchange with a wide gap between the two ramps divided by the
Sacramento River The Sacramento River () is the principal river of Northern California in the United States and is the largest river in California. Rising in the Klamath Mountains, the river flows south for before reaching the Sacramento–San Joaquin River D ...
as well as Tauhindauli Park. North of the southbound offramp with exit 730, I-5 Bus. moves closer to the southbound lanes of I-5 and runs beneath the south end of Siskiyou Avenue which contains a bridge over both Dunsmuir Avenue and I-5. Near a local road named Scarlet Way, the road moves away from the interstate with mostly residential wooded surroundings. Across from the Castle Rock Water Company, Dunsmuir Avenue becomes Mott Road with a parking lot for the
Hedge Creek Falls Hedge Creek Falls is a waterfall on Hedge Creek, in the Shasta Cascade area in Dunsmuir, California. There is a small cave located behind the waterfall, allowing visitors to walk behind the cascading water. Shortly after the waterfall, hedge cr ...
Scenic Area, while I-5 Bus. makes a right turn onto the north end of Siskiyou Avenue, and ends at a diamond interchange with I-5 at exit 732. ;Major intersections


Mount Shasta business loop

Interstate 5 Business (I-5 Bus.) is a
business route A business route (or business loop, business spur, or city route) in the United States is a short special route that branches off a parent numbered highway at its beginning, continues through the central business district of a nearby city or to ...
of I-5 in the city of
Mount Shasta Mount Shasta ( ; Shasta people, Shasta: ''Waka-nunee-Tuki-wuki''; Karuk language, Karuk: ''Úytaahkoo'') is a Volcano#Volcanic activity, potentially active stratovolcano at the southern end of the Cascade Range in Siskiyou County, California. A ...
. I-5 Bus. followed the original routing of US 99 along South Mount Shasta Boulevard at exit 737 (mixed with SR 89 at exit 736) and North Mount Shasta Boulevard at exit 740. Many of the businesses along the route are Alpine and Scandinavian mountain-themed motels. ;Route description I-5 Bus. begins at exit 737 which has connecting ramps to and from exit 736 ( SR 89). The first intersection along the road is with South Mount Shasta Boulevard, a frontage road connecting to SR 89, which also connects southbound drivers to northbound I-5 via SR 89. North of that intersection the street name for the business route is South Mount Shasta Boulevard, with remnants of the old road on the northeast corner of that intersection. The road starts out as a two-lane forest road, though sparse development begins to show up after the intersection with Church Street where the road turns straight north. At the Evergreen Lodge, the route curves to the northwest, where development can now be found on both sides. Though primarily consisting of commercial development including motels and restaurants, a few residences can also be seen along the road. The northwest trajectory continue through the intersection with Old McCloud Road then turns straight north at Ream Avenue replacing the trajectory for that street. At a blinker light intersection with Mount Cloud Avenue and Chestnut Street, South Mount Shasta becomes North Mount Shasta and bends to the northwest again. The first intersection after this blinker light is West Lake Street (at City Hall) and East Lake Street, the former of which is CR A10, a route that joins I-5 Bus. for two blocks. The overlap ends at East Alma Street, and CR A10 makes a right turn. It is here that the road runs parallel along the east side of a former SP line, now part of UP, although it briefly moves away from the tracks between East Ivy Street and north of East Hinckley Street with the north end of Chestnut Street in between. Shortly after returning to the side of the tracks it encounters a railroad crossing of a spur leading to the south side of the mountain almost to McCloud. Shortly after passing by some industrial zoning, the remnant of an even older section of US 99 can be found at Ski Village Drive. After making a sharp curve to the west, the old section of US 99 is spotted again as Road Number 2M16, albeit cut off from I-5 Bus. as a dead-end street. The last intersection along the route is with Spring Hill Road, before I-5 Bus. finally terminates at northbound I-5, while southbound I-5 Bus. begins at a flyover interchange from exit 740. ;Major intersections


Weed business loop

Interstate 5 Business (I-5 Bus.) runs along Weed Boulevard in
Weed A weed is a plant considered undesirable in a particular situation, growing where it conflicts with human preferences, needs, or goals.Harlan, J. R., & deWet, J. M. (1965). Some thoughts about weeds. ''Economic botany'', ''19''(1), 16-24. Pla ...
. Its southern terminus is at I-5 at exit 745. It then overlaps the southernmost segment of US 97 before overlapping SR 265 between US 97 and I-5 at exit 748. ;Major intersections


Yreka business loop

Interstate 5 Business (I-5 Bus.) in
Yreka Yreka ( ) is a city in and the county seat of Siskiyou County, California, United States, near the Shasta River; the city has an area of about , most of it land. As of the 2020 census, the population was 7,807, reflecting an increase from 7,7 ...
, at , begins on I-5 at exit 773. It then overlaps with SR 3 along Main Street, another part of former US 99. I-5 Bus./SR 3 then turns east onto Montague Road to intersect with I-5 at its exit 776. I-5 Bus. terminates at I-5 while SR 3 continues onto Montague.


Oregon

Although Oregon has no official business routes of I-5, OR 99 essentially serves as a de facto one, running along a former routing of US 99.


Washington


Vancouver business loop

Interstate 5 Business (I-5 Bus.) was a
business route A business route (or business loop, business spur, or city route) in the United States is a short special route that branches off a parent numbered highway at its beginning, continues through the central business district of a nearby city or to ...
of I-5 in
Vancouver Vancouver is a major city in Western Canada, located in the Lower Mainland region of British Columbia. As the List of cities in British Columbia, most populous city in the province, the 2021 Canadian census recorded 662,248 people in the cit ...
.


Castle Rock business loop

Interstate 5 Business (I-5 Bus.) is a
business route A business route (or business loop, business spur, or city route) in the United States is a short special route that branches off a parent numbered highway at its beginning, continues through the central business district of a nearby city or to ...
of I-5 in
Castle Rock Castle Rock may refer to: Geography Islands * Castle Rock (Alaska), an island off the coast of the U.S. state of Alaska * Castle Rock, Hong Kong, an island of Hong Kong, part of the Po Toi Islands * Castle Rock (Massachusetts), an island in th ...
. It is partially concurrent with State Route 411 (SR 411).


Chehalis–Centralia business loop

Interstate 5 Business (I-5 Bus.) was a
business route A business route (or business loop, business spur, or city route) in the United States is a short special route that branches off a parent numbered highway at its beginning, continues through the central business district of a nearby city or to ...
of I-5 from Chehalis to Centralia. The route was originally composed of two partial loops connected by a center leg. Each loop served a city, with the northern loop serving Centralia and the southern loop serving Chehalis. These were posted following the elimination of the US 99 designation along most of the route in 1964. The business loop was removed in the 1970s; however, in 1989, the Chehalis City Council voted to restore the southern half of the route, composing the center leg and Chehalis loop. The Centralia City Council was also planning to take up the issue; however, it is unclear whether a vote was held and signs were not restored to the northern half of the route. However, the Chehalis part of the business loop had its signage restored in 1989. The signage was removed completely in 2018 when the interchange with I-5 was reconstructed.


Olympia


Federal Way business loop

Interstate 5 Business (I-5 Bus.) was a section of former US 99 from
Fife Fife ( , ; ; ) is a council areas of Scotland, council area and lieutenancy areas of Scotland, lieutenancy area in Scotland. A peninsula, it is bordered by the Firth of Tay to the north, the North Sea to the east, the Firth of Forth to the s ...
through
Federal Way Federal Way is a city in King County, Washington, United States and part of the Seattle metropolitan area. One of the most recently incorporated cities in the county, its population was 101,030 at the 2020 census. Federal Way is the 10th most p ...
to Midway (near
Des Moines Des Moines is the List of capitals in the United States, capital and List of cities in Iowa, most populous city in the U.S. state of Iowa. It is the county seat of Polk County, Iowa, Polk County with parts extending into Warren County, Iowa, Wa ...
) that was signed as a business loop in 1962. It is now part of SR 99.


Seattle

Interstate 5 Business in Seattle was a temporary designation of the collector-distributor roads servicing Interstate 90's western terminal, as well as Dearborn, James, and Madison streets, in downtown Seattle during
WSDOT The Washington State Department of Transportation (WSDOT or WashDOT, both ) is a governmental agency that constructs, maintains, and regulates the use of transportation infrastructure in the U.S. state of Washington (state), Washington. Establi ...
's project to repair I-5 in 2018 so that motorists knew they could use that as a bypass around construction zones. When the project concluded in 2024, the designation was retired.


References


External links


Interstate Business Routes @ Interstate-Guide.com: Business Route 5
{{I-5 aux B 05