Business routes of Interstate 90

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Interstate 90 marker

Interstate 90
Highway system

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[edit]

Cle Elum loop[edit]

Interstate 90 Business
Location: Cle Elum, Washington

Ellensburg loop[edit]

Interstate 90 Business
Location: Ellensburg, Washington

Interstate 90 Business is a business loop of Interstate 90 in Ellensburg. It runs from a semi-trumpet interchange at exit 106 on I-90 at U.S. Route 97 then continues along West University Way to North Main Street, South Main Street and Canyon Drive, to a folded-diamond interchange with I-90/US 97 at exit 109.

Moses Lake loop[edit]

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.

Ritzville loop[edit]

Interstate 90 Business
Location: Ritzville, Washington

Medical Lake loop[edit]

Interstate 90 Business
Location: Medical Lake, Washington

Spokane loop[edit]

Interstate 90 Business
Location: Spokane, Washington

Spokane Valley loop[edit]

Interstate 90 Business
Location: Spokane Valley, Washington
Existed: May 2013–present

Interstate 90 Business is a business loop of Interstate 90 in Spokane Valley, and can be viewed as an extension of the former I-90 Spokane Business Loop, if that route had not been decommissioned. It runs from exit 285 on I-90 and serves as a one-way pair, with eastbound traffic on Appleway Boulevard, and westbound traffic on Sprague Avenue. At University Drive, the right-of-way for Appleway Boulevard continues as a bike trail, and eastbound BL-90 turns north until it reaches Sprague Avenue which becomes two-way traffic east of that point. The only marked route along this segment is Washington State Route 27. Beyond that BL-90 continues along Sprague Avenue until South Tschirley Road where it shifts to the east-northeast and becomes Appleway Avenue again, running along the Appleway Trail that it encountered at University Drive. The trail ends across from East Broadway Avenue, and the road curves straight east to become Country Vista Drive, while BL-90 moves onto a connecting road to the flyover at to eastbound only I-90 ending at westbound only exit 294.

Idaho[edit]

Post Falls loop[edit]

Interstate 90 Business
Location: Post Falls, Idaho
Length: 5.560 mi[1] (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. As its Business Loop designation implies, I-90 Business 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[edit]

Interstate 90 Business
Location: Coeur d'Alene, Idaho
Length: 3.834 mi[1] (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.

Osburn spur[edit]

Interstate 90 Business
Location: Osburn, Idaho
Length: 1.639 mi[1] (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 58 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.

Silverton spur[edit]

Interstate 90 Business
Location: Silverton, Idaho
Length: 0.119 mi (0.192 km)

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.

Wallace loop[edit]

Interstate 90 Business
Location: Wallace, Idaho
Length: 1.243 mi[1] (2.000 km)

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.47°28′17.8″N 115°55′20.7″W / 47.471611°N 115.922417°W / 47.471611; -115.922417 [2]

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.[3] 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[edit]

Interstate 90 Business
Location: Mullan, Idaho
Length: 1.0 mi[1] (1.6 km)

Interstate 90 Business is a one-mile (1.6 km) business loop of Interstate 90 in Mullan. It runs from a westbound only flyunder interchange at exit 68 along River Road then Friday Avenue, and turns south onto Atlas Road to end at a diamond interchange for exit 69.

Montana[edit]

Alberton loop[edit]

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 to another diamond interchange with Petty Creek Road (S-507) at exit 77.

Missoula loop[edit]

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 loop[edit]

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.

Butte loop[edit]

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 Business Loop 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 males 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 loop[edit]

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.

Livingston loop[edit]

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 to a pair of right-on/right-off interchange with US 89 at exit 337. US 89 joins a concurrency with I-90 east of that point.

Big Timber loop[edit]

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 loop[edit]

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.

Billings loop[edit]

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.

Hardin loop[edit]

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.

Wyoming[edit]

Sheridan loop[edit]

Interstate 90 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.

Buffalo, Wyoming loop[edit]

Interstate 90 Business
Location: Buffalo, Wyoming

Interstate 90 Business is a business loop of Interstate 90 in Buffalo. It runs from a half-diamond interchange at exit 56A south along North Main Street along with BL 25 and US 87 BUS until it reaches US 16 (East Hart Street), and turns left to go east. Right after Bypass Road, which is incorrectly marked by Google Maps as being part of WY 196, BL 90/US 16 passes under Interstate 25 at exit 299 and continues to run straight east until it curves to the northeast at the intersection of TW Road. BL 90 ends at a full diamond interchange at exit 58 on I-90, but US 16 continues to run east towards Ucross.

Gillette loop[edit]

Interstate 90 Business
Location: Gillette, Wyoming

Interstate 90 Business is a business loop of Interstate 90 in Gillette. It runs from diamond interchanges at exit 124 and at exit 128. The route also carries the north end of WY 50 and US 14/16. A State of Wyoming "Port of Entry" can be found at the east end of the business loop.[4]

Moorcroft loop[edit]

Interstate 90 Business
Location: Moorcroft, Wyoming

Interstate 90 Business is a business loop of Interstate 90 in Moorcroft. It runs from diamond interchanges at exit 153 and at exit 154. The route also carries the concurrency with US 14 until it reaches Yellowstone Avenue and US 16 until it reaches the Cenex/Coffee Cup Fuel Stop. The western edge of the business loop also serves as the eastern terminus of Wyoming Highway 51.

Sundance loop[edit]

Interstate 90 Business
Location: Sundance, Wyoming

Interstate 90 Business is a business loop of Interstate 90 in Sundance. It runs from diamond interchanges at exit 185 and at exit 195. The route also carries US 14 and includes West Street and East Cleveland Street.

A "Port of Entry" can be found at the east end of the Business Loop.[5]

South Dakota[edit]

Spearfish loop[edit]

Interstate 90 Business
Location: Spearfish, South Dakota

Interstate 90 Business is a business loop of Interstate 90 in Spearfish. It runs from diamond interchanges at exit 10 and at exit 14. The route includes streets such as North Avenue, North Main Street, East Colorado Boulevard, and North 27th Street. It also carries part of US 14A along East Colorado Boulevard into exit 14.

Sturgis loop[edit]

Interstate 90 Business
Location: Sturgis, South Dakota

Interstate 90 Business is a business loop of Interstate 90 in Sturgis. It runs from a diamond interchange at exit 30 at the east end of U.S. Route 14A The route includes streets such as Lazelle Street (SD 34/79) and Junction Boulevard at another diamond interchange at exit 32.

Rapid City loop[edit]

Interstate 90 Business
Location: Rapid City, South Dakota

Interstate 90 Business is a business loop of Interstate 90 in Rapid City. It runs from a diamond interchange at exit 52 (Peaceful Pines Road) in Black Hawk, then runs along the southeast side of I-90 on SD 231 (Sturgis Road), gradually moving away from that side of the interstate. Just before the intersection with Merritt Road, BL 90/SD 231 crosses the Meade-Pennington County Line. Within the Rapid City Limits, the concurrency with SD 231 ends at the intersection with West Chicago Street, and then it curves east onto West Main Street before it intersects SD 44 (Mountain View Road). In Downtown Rapid City, the route becomes a one-way pair which includes a brief two block overlap with US 16 until the intersections with East Street, where they turn north and intersect SD 44 a second time. Curving to the east at a railroad track, the road's name is changed to East North Street, then curves to the northeast at the intersection of North Campbell Street and finally terminates at a SPUI interchange with I-90 at exit 60. North of that interchange, East North Road becomes Tish Boulevard, a street within an unfinished industrial development leading to a city firehouse before becoming a dead end at a private one-lane dirt road.


Wall loop[edit]

Interstate 90 Business
Location: Wall, South Dakota

Interstate 90 Business is a business loop of Interstate 90 in Wall. It begins at a diamond interchange at exit 109 at Airport Road (signed as West 4th Avenue). Less than one block after the interchange, BL 90 veers off to the right onto South Boulevard (former US 14 and 16), running southeast, while Airport Road turns into West Fourth Avenue after a landing strip and heads towards the famous Wall Drug Store and other local tourist attractions. South Boulevard passes a local high school before becoming a divided highway and crossing the former Chicago and Northwestern Railway line. East of that line, the route is diverted onto two bi-directional frontage roads that once flanked the former US 14/16. At Glen Street BL 90 turns south at the corner of a museum dedicated to the Battle of Wounded Knee, ending one block later at exit 110, which is also shared by the western terminus of South Dakota Highway 240.

Kadoka loop[edit]

Interstate 90 Business
Location: Kadoka, South Dakota

Interstate 90 Business is a business loop of Interstate 90 in Kadoka. It runs from a diamond interchange at exit 150 at the end of the overlap with South Dakota Highway 73, then makes a left turn onto South Dakota Highway 248. The road runs east for one block, then turns northeast away from Maple Street (Old Highway 16), as it runs along the northern edge of the city. After a second intersection with Old Highway 16, BL 90/SD 248 continues the same trajectory, albeit with less developed surroundings. Just as SD 248 starts to curve to the east, BL 90 leaves the overlap turning north onto South Creek Road and finally terminates at a diamond interchange with I-90 at exit 152. Only the Badlands Truckstop can be found north of the exit 152 interchange.

Former Belvidere spur[edit]

Interstate 90 Business
Location: Belvidere, South Dakota

Interstate 90 Business is a former business spur of Interstate 90 in Belvidere. It ran from a diamond interchanges at exit 163 at the west end of an overlap with South Dakota Highway 63. The route overlapped southbound SD 63 for 1.1 miles (1.8 km), but partially due to the fact that the community served by the route has a population that is consistently in the double digits, it was decommissioned in 2009.


Murdo loop[edit]

Interstate 90 Business
Location: Murdo, South Dakota

Interstate 90 Business is a business loop of Interstate 90 in Murdo. It runs from a diamond interchange at exit 191, then follows Fifth Avenue (South Dakota Highway 248), passing by sites such as the Pioneer Auto Museum.[6] At a blinker-light intersection with Kennedy Avenue, BL 90 leave its concurrency with SD 248 and turns south and turns south onto Willow Street before ending at another diamond interchange with exit 192 on I-90, which is also shared with the western terminus of a concurrency with U.S. Route 83.

Former Vivian loop[edit]

Interstate 90 Business
Location: Vivian, South Dakota

Interstate 90 Business is a former business loop of Interstate 90 in Vivian. The route began at a diamond interchange at exit 212, at the east end of the overlap with US 83, and northern terminus of South Dakota Highway 53. It ran north, overlapping US 83 until the nearby intersection with South Dakota Highway 248, then turned east overlapping that route until it reached 293rd Avenue. From there, it ran south until finally terminating at I-90 at exit 214, another diamond interchange.

Presho loop[edit]

Interstate 90 Business
Location: Presho, South Dakota

Interstate 90 Business is a business loop of Interstate 90 in Presho. It runs from a diamond interchange at exit 225 and at exit 226. The route includes streets such as 305th Avenue, then turns east onto South Dakota Highway 248, and finally turns south onto Willow Street before ending at another diamond interchange with exit 226 on I-90, at the northern terminus of U.S. Route 183.


Oacoma-Chamberlain loop[edit]

Interstate 90 Business
Location: Oacoma-Chamberlain, South Dakota

Interstate 90 Business is a business loop of Interstate 90 between Oacoma and Chamberlain, South Dakota. It runs from diamond interchanges at exit 260 in Oacoma and at exit 265 in Chamberlin along a former segment of U.S. Route 16, and includes the Chamberlain Bridge over the Missouri River. Within Chamberlain, it is also overlapped by South Dakota Highway 50.

Former White Lake spur[edit]

Interstate 90 Business
Location: White Lake, South Dakota

Interstate 90 Business was a 0.5-mile (0.80 km) business spur of Interstate 90 in White Lake. It ran from a diamond interchanges at exit 296 north along 374th Street (South Main Street) until the intersection with Aurora CR 34 (Old Highway 16).

Former Plankinton loop[edit]

Interstate 90 Business
Location: Plankinton, South Dakota

Interstate 90 Business was a 2.6 miles (4.2 km) business loop of Interstate 90 in Plankinton. It ran from a diamond interchange at exit 308 north along Aurora CR 35 (386th Avenue/South Main Street) until the intersection with Aurora CR 34 (Old Highway 16). Unlike in White Lake, however, this business route turned right along Old Highway 16 and followed it until the intersection of US 281, where it turned south, overlapping that route until the another diamond interchange with I-90 at exit 310, where it finally terminated.


Mitchell loop[edit]

Interstate 90 Business
Location: Mitchell, South Dakota

Interstate 90 Business is a business loop of Interstate 90 in Mitchell. It runs from a diamond interchange at exit 330 and includes a concurrency with South Dakota Highway 37 along Ohlman Street, then turns right onto West Havens Avenue. West Havens Avenue becomes East Havens Street at Main Street, and then turns south at the intersection with South Burr Street while East Havens Street becomes South Dakota Highway 38. The road curves from south to southeast and becomes a divided highway with frontage roads from the intersection with Kay Street. One block after the frontage roads end, BL 90 not only ends at exit 332, but is replaced by SD 37 which is also the eastern terminus of an overlap with I-90.

Sioux Falls spur[edit]

Interstate 90 Downtown
Location: Sioux Falls, South Dakota

Interstate 90 Business (a.k.a. Interstate 90 Downtown) is a mostly unsigned business spur of Interstate 90 in Sioux Falls. It runs south from a SPUI interchange at exit 399 and it overlapped by South Dakota Highway 115 on Cliff Avenue, East Benson Road and North Minnesota Avenue until it reaches 10th Street and 11th Street, terminating at BL 29 and BL 229, both of which overlap South Dakota Highway 42. BL 229 continues south along SD 115 to I-229 at exit 3.

Minnesota[edit]

Worthington loop[edit]

Interstate 90 Business
Location: Worthington, Minnesota

Interstate 90 Business is a one-mile (1.6 km) business loop of Interstate 90 in Worthington. It runs from exit 42 on CSAH 25 (Diagonal Road) then turns left onto CSAH 35 (Oxford Street) to head east. At Humiston Avenue BL 90 is joined by a concurrency with southbound US 59. BL 90 and US 59 continue to run east until they reach a traffic circle where US 59 turns south and BL 90/Oxford Street turn northeast along Minnesota State Highway 60. BL 90 ends at exit 45 on US 90, but MN 60 continues toward cities such as Windom, St. James, Mankato, and Wabasha.

Fairmont loop[edit]

Interstate 90 Business
Location: Fairmont, Minnesota

Interstate 90 Business is a business loop of Interstate 90 in Fairmont. It runs from a diamond interchange at exit 99 on I-90 at CSAH 39 to a folded diamond interchange with Minnesota Trunk Highway 15 at exit 102.



Austin loop[edit]

Interstate 90 Business
Location: Austin, Minnesota

Interstate 90 Business is a business loop of Interstate 90 in Austin. It runs from a diamond interchange at exit 175 on I-90 at CSAH 46 (Oakland Avenue West), and runs directly east with Minnesota Trunk Highway 105. Most of this segment of the road is flanked by local service roads, except at the bridge over Turtle Creek. After the intersection with 14th Street Northwest (former US 218), the road becomes a one-way pair, and MN 105 turns south onto 12th Street Southwest. Meanwhile, eastbound BL 90 runs along First Avenue Southwest, while westbound BL 90 remains along Oakland Avenue West. At Main Street, First Avenue Southwest and Oakland Avenue West both become First Avenue Southeast and Oakland Avenue East, and the one way pair ends at Fourth Street Southeast, and eastbound BL 90 turns left (north) to rejoin its Oakland Avenue counterpart. BL 90 crosses a bridge over Cedar River where Oakland Avenue East becomes Oakland Place Southeast. After the intersection with 10th Street Northeast it runs beneath a 14-foot (4.3 m) railroad bridge, then curves to the northeast to cross another bridge over Dobbins Creek and run along the east side of East Side Lake. Interstate Business Loop 90 ends at exit 180A on I-90/US 218, the latter of which leaves it's concurrency with I-90 at exit 180B.

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