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Interstate 90 Business
Location
Country	United States
Highway system
Interstate Highway System Main Auxiliary Suffixed Business Future

Interstate 90 Business may refer to several business routes of the Interstate Highway System that connects Interstate 90 with the central business district of various cities bypassed by I-90. Each business route can be either a business loop or a business spur, depending on whether both ends connect to I-90. The business route in each community is considered a unique route. In many cases, these routes are a former section of a U.S. Route.

Washington

Cle Elum loop

Interstate 90 Business
Location	Cle Elum, Washington

Interstate 90 Business was a former business loop through Cle Elum that connected with I-90 from an eastbound only flyover interchange on Old US 10 at eastbound Exit 84. It ran along 1st Street going through Cle Elum and continued east on where SR 903 is currently located. It then went south back to I-90 along where SR 10 and SR 970 currently run together at exit 85. It was the westernmost business route along I-90 until it was decommissioned in the 1990s.

Major intersections
The entire route is in Kittitas County.

Location	mi	km	Destinations	Notes
Cle Elum	0.0	0.0	I-90 – Seattle	Western terminus
​	0.8	1.3	SR 903 (1st St.)	Western terminus of SR 903 concurrency
​	2.8	4.5	SR 10 / SR 903 / SR 970	Eastern terminus of SR 903 concurrency; northern terminus of SR 10/SR 970 concurrency
​	3.1	5.0	I-90 / SR 10 / SR 970	Eastern terminus; southern terminus of SR 10/SR 970 concurrency
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Ellensburg loop

Interstate 90 Business
Location	Ellensburg, Washington

Interstate 90 Business is a business loop of Interstate 90 in Ellensburg. It starts at a semi-trumpet interchange at exit 106 on I-90 at U.S. Route 97 then passes through a roundabout and continues along West University Way entering downtown. Then, the route heads south as North Main Street and becomes South Main Street after intersecting West First Avenue. Then, the route becomes Canyon Drive after intersecting West Mountain View Avenue, and heads southeast to its southern terminus at a folded-diamond interchange with I-90/US 97 at exit 109.

Major intersections
The entire route is in Kittitas County.

Location	mi	km	Destinations	Notes
Ellensburg	0.0	0.0	I-90 / US 97 (W University Way)	Western terminus; western terminus of US 97 concurrency
​	0.5	0.80	US 97	Eastern terminus of US 97 concurrency
​	5.2	8.4	I-90 / US 97 – Seattle	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Moses Lake loop

Interstate 90 Business
Location	Moses Lake, Washington

Interstate 90 Business is a business loop of Interstate 90 in Moses Lake. It runs from a diamond interchange at exit 176 on I-90 at Washington Route 171 then continues along West Broadway Avenue to South Division Street where it becomes East Broadway Avenue. After South Balsam Street, the street name changes again to South Pioneer Way, only for Route 171 to make a left turn onto a new segment of East Broadway Avenue, while BL-90 curves from northeast to south-southeast. After East Hill Avenue, the road curves more directly southeast, and later intersects Washington Route 17, which joins the route in a concurrency until finally reaching I-90 at exit 179, which is a diamond interchange with a south to east loop ramp.

This section needs expansion. You can help by adding to it. (November 2016)

Ritzville spur

Interstate 90 Business
Historic U.S. Route 10
Location	Ritzville, Washington

This section needs expansion. You can help by adding to it. (November 2016)

Interstate 90 Business is a business spur (incomplete loop) of Interstate 90 in Ritzville, Washington, running through the city along the former alignment of U.S. Route 10, only connecting to I-90 at its west end. The business route is also signed with highway shields commemorating historic US 10.^[1] Historic US 10 continues east of the Ritzville city line for another 9 miles (15 km) before terminating at Interstate 90.

Spokane loop

Interstate 90 Business
Location	Spokane, Washington
Existed	2000

This section needs expansion. You can help by adding to it. (November 2016)

Interstate 90 Business was a business loop of Interstate 90 in Spokane, running through the city from west to east. The route began near Spokane International Airport at exit 276, a parclo interchange on Grove Road where it briefly ran northwest, then turned northeastbound along South Geiger Boulevard. Beyond the airport property, BL-90 ran beneath US 2 with no access, and then turned onto an eastbound only wye interchange with West Sunset Boulevard, which merged as a one-way pair with 3rd Avenue eastbound and 2nd Avenue westbound. At Scott Street, the route left 3rd and 2nd Avenue moved northeast to Sprague Way, then merged onto the bidirectional Sprague Avenue beneath State Route 290 at Pines Road. The business route continued east onto Sprague Avenue until it reached Spokane Valley, terminating at exit 285, which coincidentally is the western terminus of BL-90 in Spokane Valley.

Spokane Valley loop

Interstate 90 Business
Location	Spokane Valley, Washington
Length	8.21 mi[2] (13.21 km)
Existed	May 2013–present

Interstate 90 Business is a business loop of Interstate 90 in Spokane Valley, running through the city from west to east. From its western terminus at exit 285, the route travels eastbound along Appleway Boulevard and westbound Sprague Avenue. The two streets merge onto the bidirectional Sprague Avenue at University Road and intersect State Route 27 at Pines Road. The business route continues northeast onto Appleway Avenue and turns north onto Barker Road in Greenacres, terminating at exit 293.^[2][3]

The business route designation was proposed by businesses and the city government in 2012, along with $60,000 (equivalent to $117,000 in 2023^[4]) to fund the installation of signs along Sprague Avenue.^[5] The designation was approved by AASHTO in May 2013, and its 18 signs were installed by the city by the end of the year.^[6] Sprague Avenue had previously been part of U.S. Route 10, the transcontinental predecessor to I-90, and reached its present width of 62 feet (19 m) in 1949.

Idaho

Post Falls loop

Interstate 90 Business
Location	Post Falls, Idaho
Length	5.560 mi[7] (8.948 km)

Interstate 90 Business is a business loop of Interstate 90 in Post Falls. The route links I-90, which bypasses downtown Post Falls to the south, and downtown Post Falls, and terminates at I-90 at each end. It begins at I-90 exit 2 in Post Falls. It goes north to Seltice Way. The business loop turns east and follows Seltice Way through downtown. Seltice Way goes under I-90 at exit 6. This interchange is the eastern terminus of I-90 Business (Post Falls). Seltice Way continues east to an intersection with I-90 Business (Coeur d'Alene) at Northwest Blvd.

I-90 Business is a segment of former U.S. Route 10 (US 10) and I-90 alignment through Idaho. US 10 was designated in 1927. US 10 and I-90 entered Idaho on Seltice Way at the Washington-Idaho state border. The highways followed Seltice Way and Northwest Boulevard into Coeur d'Alene. The highways followed Sherman Avenue east through downtown town Coeur d'Alene. Then, the highway turned south and followed Lake Coeur d'Alene Drive and Yellowstone Trail along the shore of Lake Coeur d'Alene to the Coeur d'Alene National Forest. The highway moved to the present I-90 route after the freeway and Veterans Memorial Centennial Bridge was completed in the early 1990s.

Coeur d'Alene loop

Interstate 90 Business
Location	Coeur d'Alene, Idaho
Length	3.834 mi[7] (6.170 km)

Interstate 90 Business is a business loop of Interstate 90 in Coeur d'Alene. The route links I-90, which bypasses downtown Coeur d'Alene to the north, and downtown Coeur d'Alene. As its Business Loop designation implies, I-90 Business terminates at I-90 at each end. It begins at I-90 exit 11 in Coeur d'Alene. It goes southeast on Northwest Boulevard. I-90 Business intersects Seltice Way (former US 10 & I-90) just south of the freeway. I-90 Business intersects U.S. Route 95 at a diamond interchange just north of the Spokane River. The business loop continues southeast past North Idaho College turns east on Sherman Avenue near a city park, beach, marina, and the Lake Coeur d'Alene Resort. Sherman Avenue carries the I-90 Business through downtown and out to an interchange with I-90 at exit 15. This interchange is the eastern terminus of I-90 Business.

I-90 Business is a segment of former U.S. Route 10 (US 10) and I-90 alignment through Idaho. US 10 was designated in 1927. US 10 and I-90 entered Idaho on Seltice Way at the Washington-Idaho state border. The highways followed Seltice Way and Northwest Boulevard into Coeur d'Alene. The highways followed Sherman Avenue east through downtown town Coeur d'Alene. Then, the highway turned south and followed Lake Coeur d'Alene Drive and Yellowstone Trail along the shore of Lake Coeur d'Alene to the Coeur d'Alene National Forest. The highway moved to the present I-90 route after the freeway and Veterans Memorial Centennial Bridge was completed in the early 1990s.

Kellogg loop

Interstate 90 Business
Location	Kellogg, Idaho
Existed	2006

Interstate 90 Business was a 1.4-mile (2.3 km) business loop^[8] of Interstate 90 in Kellogg. It ran from a diamond interchange at exit 49 north along Bunker Avenue until the intersection with West Cameron Avenue (Old Highway 10), where it turned south onto Division Street and joined its parent route at the eastbound on-ramp for Exit 51 (a diamond interchange with no westbound on-ramp), finally coming to an end.

This section needs expansion. You can help by adding to it. (March 2021)

Osburn spur

Interstate 90 Business
Location	Osburn, Idaho
Length	1.639 mi[7] (2.638 km)

Interstate 90 Business is 1.6-mile (2.6 km) business spur of Interstate 90 in Osburn. It runs south from a diamond interchange at exit 57 along North Third Street to East Mullan Avenue (former US 10). Originally, the route was part of a loop leading from North Third Street along East Mullan Avenue to Silver Valley Road to Markwell Avenue in Silverton.

This section needs expansion. You can help by adding to it. (July 2015)

Silverton spur

Interstate 90 Business
Location	Silverton, Idaho
Length	0.119 mi (192 m)

Interstate 90 Business is a 0.12-mile (0.19 km) business spur of Interstate 90 in Silverton. It runs south from a diamond interchange at exit 60 along Markwell Avenue to Silver Valley Road (former US 10), although most of the "business" is located north of that interchange. Originally, the route was part of a loop leading from west from Markwell Avenue along Silver Valley Road into Osburn, where it led to East Mullan Avenue, then turned right onto North Third Street finally ending at exit 58 in Osburn.

This section needs expansion. You can help by adding to it. (November 2016)

Wallace loop

Interstate 90 Business
Location	Wallace, Idaho
Length	1.243 mi[7] (2.000 km)
Existed	1991–present

Interstate 90 Business (also signed as The Harry F. Magnuson Way) is a business loop of Interstate 90 in Wallace. The route links I-90, which goes north of the city, and downtown Wallace. As its Business Loop designation implies, I-90 Business terminates at I-90 at each end. This section of Interstate 90 Business contains what was the last traffic light on a coast-to-coast Interstate highway. It begins at I-90 exit 61 in Wallace. It goes southeast on former U.S. Route 10 and the initial route of I-90. I-90 was rerouted to the freeway in 1991. I-90 Business follows the main road through Wallace. Locally, the route is known as Front Street, 5th Street, and Bank Street. I-90 Business intersects State Highway 4 at an at-grade intersection. This intersection is also the I-90 interchange with Highway 4. I-90 Business terminates at this interchange signed as exit 62.

I-90 Business is a segment of former U.S. Route 10 (US 10) and the original I-90 alignment through Idaho. US 10 was designated in 1927. US 10 became co-signed with I-90 in the 1960s. Eventually, I-90 replaced US 10 in Idaho. When the I-90 freeway opened in 1991, the US 10 alignment became I-90 Business. The intersection of Bank Street (US 10, I-90) and Seventh Street was the last traffic light located on a coast-to-coast Interstate highway. It was one of the last, if not the last, removed from a primary Interstate highway. It is the only traffic signal in Wallace and was put into flash mode when the new I-90 viaduct opened.

I-90 Business passes through the Wallace Historic District. In 1979, several blocks of downtown Wallace were listed on the National Register of Historic Places as a historic district.^[9] City leaders organized the effort to recognize the historic district to prevent the Federal Highway Administration (FHWA) and Idaho Department of Transportation (IDOT) from condemning and demolishing the city's core to build an at-grade freeway. The FHWA and IDOT designed and built an elevated viaduct to finish the interstate freeway.

Mullan loop

Interstate 90 Business
Location	Mullan, Idaho
Length	1.0 mi[7] (1.6 km)

Interstate 90 Business is a one-mile (1.6 km) business loop of Interstate 90 in Mullan. It runs from an eastbound only flyunder interchange at exit 68 where it immediately crosses a bridge over the South Fork of the Coeur d'Alene River and runs along River Street, running northeast and parallel to the Trail of the Coeur d'Alenes. After the intersection of 3rd Avenue curves from northeast to east as it runs over a second bridge over the South Fork of the Coeur d'Alene River. The road crosses over the river a third time after the intersection with Copper Street. After the intersection with Eighth Avenue, the route makes a reverse curve to the left and becomes Friday Avenue, where it passes by a small connecting road to Earle Street in front of a high school football field. While Friday Avenue continues east towards national and local parkland, as well as some mining areas, BL 90 turns south onto Atlas Road and crosses the last bridge over the Coeur d'Alene South Fork to end at a diamond interchange for exit 69.

Montana

Alberton loop

Interstate 90 Business
Location	Alberton, Montana

Interstate 90 Business is a business loop of Interstate 90 in Alberton. It runs from a diamond interchange at exit 75 on I-90 at Railroad Avenue, then to Adams Street, and finally to another diamond interchange with Petty Creek Road (S-507) at exit 77.

This section needs expansion. You can help by adding to it. (November 2016)

Missoula loopedit

Interstate 90 Business
Location	Missoula, Montana

Interstate 90 Business is a business loop of Interstate 90 in Missoula. The business route begins at a diamond interchange with I-90/MT 200 at exit 101 (Reserve Street), which is also the eastern terminus of the overlap with U.S. Route 93. As it crosses over a railroad bridge, it immediately leaves US 93 at an interchange with West Broadway Street, and turns southeast. BL-90 briefly parallels the south side of the former Northern Pacific Railway line but turns away at the intersection with Railroad Street West, still remaining in a relative southeast trajectory. The road briefly turns straight east before the intersection with North Russell Street, but returns southeast at Toole Street. Between Hawthorne and McCormick Streets, it runs directly along the north bank of the Clark Fork River before reaching the Heart of Missoula. At Higgins Avenue, West Broadway Street becomes East Broadway Street, and at Madison Street, the route is joined by another concurrency with U.S. Route 12. BL-90/US 12 run along East Broadway Street together for three blocks until it reaches Van Buren Street, where they both turn north, and run under a bridge for that same NP line it encountered under Reserve Street, and BL-90 finally ends at a diamond interchange with I-90/MT 200 at exit 105, while US 12 continues east along an overlap with I-90 until it reaches exit 174 in Garrison.

Deer Lodge loopedit

Interstate 90 Business
Location	Deer Lodge, Montana

Interstate 90 Business is a business loop of Interstate 90 in Deer Lodge. It runs from a diamond interchange at exit 184 on I-90 at "North Interchange" and Sam Beck Road to Main Street and a flyover interchange at exit 187. That exit has no westbound entrance ramps.

This section needs expansion. You can help by adding to it. (November 2016)

Butte loopedit

Interstate 90 Business
Location	Butte, Montana

Interstate 90 Business is a business loop of Interstate 90 in Butte. It runs from a flyover interchange at exit 124 on I-90 at Interstate 115 to a partial cloverleaf interchange with MT 2 at exit 127. Besides I-115, BL-90 is also concurrent with BL-15.

Interstate 90 Business begins at the interchange with exit 124 on I-15/I-90 along I-115 and Business Loop 15. After the interchange with South Excelsior Avenue, I-115 ends at an intersection with a local road named Clark Street and BL 15/90 continue along West Iron Street, as a four-lane divided highway. At the intersection of Montana Street, BL-15/90 make a left turn, while West Iron Street continues east onto a disjointed intersection as a local two-lane street. The route run along Montana Street until the intersection with West Park Street, which is a local two-lane street. At Main Street, West Park Street becomes East Park Street. Two and a half blocks after this it intersects Arizona Street and Avenue and turns south onto Arizona Avenue, which makes a sharp turn to the southeast at Curtis Street. Just before the intersection with East Platinum Street, the routes veer off to the right onto Utah Avenue. Four blocks south of there, it crosses a Great Northern Railroad line, one block west of the former GN Depot.

Utah Avenue ends at East Front Street across from a former Northern Pacific Railroad depot and BL-15/90 makes a left turn there. At the intersection with Atlantic Street, East Front Street then curves to the southeast to run under a bridge beneath the former Northern Pacific Railroad line becoming Harrison Avenue. The westbound route has a sign above the bridge for the welcoming motorists to the Butte National Historic Landmark District, but both sides have signs for the former Burlington Northern Railroad. The first notable site along the way is the Greyhound Bus station and Greyhound Package Express office, right next to the tracks and across from the Butte Civics Center. Other sites along the way include the former Harrison Avenue Theater, and the NRHP-listed Socialist Hall. At Massachusetts Avenue, the routes turn straight south, and then ends at a partial cloverleaf with I-15/90, while Harrison Avenue continues as Montana Highway 2.

Bozeman loopedit

Interstate 90 Business
Location	Bozeman, Montana

Interstate 90 Business is a business loop of Interstate 90 in Bozeman. It runs from a diamond interchange at exit 306 on I-90 at North Seventh Street to an oddly-designed trumpet interchange with US 191 at exit 309. US 191 joins a concurrency with I-90 east of that point.

This section needs expansion. You can help by adding to it. (November 2016)

Livingston loopedit

Interstate 90 Business
Location	Livingston, Montana

Interstate 90 Business is a business loop of Interstate 90 in Livingston. It runs from a diamond interchange at exit 330 on I-90 at old Highway 10 West^[10] to a pair of right-on/right-off interchange with US 89 at exit 337.^[11] US 89 joins a concurrency with I-90 east of that point.

This section needs expansion. You can help by adding to it. (November 2016)

Big Timber loopedit

Interstate 90 Business
Location	Big Timber, Montana

Interstate 90 Business is a business loop of Interstate 90 in Big Timber. It runs from a diamond interchange at exit 367 on I-90 at the east end of an overlap with US 191. BL-90/US 191 run northeast into downtown Big Timber along West First Avenue. At McLeod Street (S-298) West First Avenue becomes East First Avenue. Then after the intersection with Bramble Street, US 191 continues northeast, while BL-90 curves southeast onto Big Timber Loop Road (Old U.S. 10). After leaving the heart of the city, it passes by the River Rocks Campground on the foot of a bridge over the Boulder River, then the Overland Golf Course. Winding northeast around a former segment of the road still used by local farmers, BL-90 finally turns south and ends at a diamond interchange with I-90 at exit 370. Old US 10 continues as a local road east of that point.

Laurel loopedit

Interstate 90 Business
Location	Laurel, Montana

Interstate 90 Business is a business loop of Interstate 90 in Laurel. It runs from an eastbound only flyunder interchange at exit 433 on I-90 at old Highway 10 West to a diamond interchange south of Old US 10 at exit 437.

This section needs expansion. You can help by adding to it. (November 2016)

Billings loopedit

Interstate 90 Business
Location	Billings, Montana

Interstate 90 Business is a business loop of Interstate 90 in Billings. It runs from a trumpet interchange at eastbound exit 446 and runs along Laurel Road, Montana Avenue and First Avenue North, in a one way pair between Division Street and 18th Street. East of 18th Street it continues until it reaches US 87, then runs southeast to a diamond interchange at exit 452.

This section needs expansion. You can help by adding to it. (November 2016)

Hardin loopedit

Interstate 90 Business
Location	Hardin, Montana

Interstate 90 Business is a business loop of Interstate 90 in Hardin. It runs from a diamond interchange at exit 495 on I-90 at North Crawford Avenue in a two block concurrency with Montana Highway 47 then makes a left turn onto 14th Street West, only to curve south again onto Center Street until it reaches "Old US 87," and makes another left torn to go east. The route runs straight east for under two blocks, then runs northeast along the north side of a railroad line. BL 90 ends at another diamond interchange with I-90 at exit 497.

This section needs expansion. You can help by adding to it. (November 2016)

Wyomingedit

Sheridan loopedit

Interstate 90 Business
Location	Sheridan, Wyoming

U.S. Highway 14 Business
Location	Sheridan, Wyoming

U.S. Highway 87 Business
Location	Sheridan, Wyoming

Interstate 90 Business is a business loop of Interstate 90 in Sheridan. It runs from an incomplete flyunder interchange at exit 20 on I-90 to a diamond interchange with US 14 at exit 25. The route also carries US 14 Business and US 87 Business, as well as a portion of mainline U.S. 87.

BL 90/US 14 Bus./US 87 Bus. begins at exit 20 at I-90 and runs south along Main Street. Along the way it serves as the eastern terminus of WY 337 at Fort Road, intersects the shared termini of WY 330 and WY 336 (both at 5th Street), serves as the eastern terminus of WY 331 further downtown, then leaves Main Street at the northern terminus of WY 332 and branches off to the southeast onto Coffeen Avenue. The road curves south again after a bridge over Little Goose Creek. US 87 Bus. ends at US 87 and WY 334, but US 14 Bus. follows BL 90 and US 87 along East Brundage Lane to I-90 at exit 25.

This section needs expansion. You can help by adding to it. (November 2016)

Zdroj:https://en.wikipedia.org?pojem=Interstate_90_Business_(Spokane_Valley,_Washington)
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