Business routes of Interstate 90
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 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
Ellensburg loop
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
Moses Lake loop
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 spur
Interstate 90 Business is a business spur 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. Historic US 10 continues east of the Ritzville city line for another before terminating at Interstate 90.Spokane loop
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 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.The business route designation was proposed by businesses and the city government in 2012, along with $60,000 to fund the installation of signs along Sprague Avenue. The designation was approved by AASHTO in May 2013, and its 18 signs were installed by the city by the end of the year. Sprague Avenue had previously been part of U.S. Route 10, the transcontinental predecessor to I-90, and reached its present width of in 1949.
Idaho
Post Falls loop
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. Seltice Way continues east to an intersection with I-90 Business at Northwest Blvd.I-90 Business is a segment of former U.S. Route 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 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 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 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 was a business loop 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, where it turned south onto Division Street and joined its parent route at the eastbound on-ramp for Exit 51, finally coming to an end.Osburn spur
Interstate 90 Business is 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. 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
Interstate 90 Business is a business spur of Interstate 90 in Silverton. It runs south from a diamond interchange at exit 60 along Markwell Avenue to Silver Valley Road, 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
Interstate 90 Business 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 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 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. City leaders organized the effort to recognize the historic district to prevent the Federal Highway Administration and Idaho Department of Transportation 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.