route that it shares with U.S. 2 is a national scenic byway and part of the International Selkirk Loop. In Coeur d'Alene, U.S. 95 runs north to south, crossing the Spokane River and serving as an arterial street for the suburbs to the north. The greater Coeur d'Alene area is almost entirely dependent upon private automobiles for transportation, the city has a Walk Score of 36, indicating most errands require a car. Combined with the city's rapid growth since 1990, relative congestion now occurs on a significant portion of the area highways, notably U.S. 95 between Northwest Blvd. north to Hayden. The average commute to work is 18.5 minutes. Public transportation Public transportation played a significant role in Coeur d'Alene's early growth as a tourist destination. When an interurban electric railroad line was completed in 1903 from Spokane to the city, Inland Northwest residents often flocked to Lake Coeur d'Alene to enjoy being on the lake and going on steamboat cruises and other activities. The interurban electric line would later become the Spokane and Inland Empire Railroad. The steamboats on Lake Coeur d'Alene were not only used to transport goods such as ore and timber, but also people. More steamboats operated on Lake Coeur d'Alene than on any other lake west of the Great Lakes, and there were intense rivalries between the steamboat lines. The electric railroad and steam navigation on Lake Coeur d'Alene lasted until the late 1930s. Free public bus service is available to area residents, provided by Citylink. Citylink buses operate in the urbanized area of Kootenai County, leaving the Riverstone Transfer Station main hub every hour, seven days a week, including holidays. Buses are wheelchair-accessible and can transport up to two bicycles. The bus system has four separate routes: Urban Route B which serves Post Falls, Hayden and West Coeur d'Alene, Urban Route C which serves Downtown Coeur d'Alene, Fernan and Hayden, Rural Route, which serves the towns of Worley, Plummer, Tensed, and De Smet, and the Link Route, which connects the two transfer stations at Riverstone and Worley. Extension of Spokane Transit Authority service into Idaho, mainly an hourly express bus to and from Coeur d'Alene, originally proposed as part of the 2015 "STA Moving Forward" ballot measure, is expected to commence in 2025. Airports The closest major airport serving Coeur d'Alene and North Idaho is Spokane International Airport, which is served by six airlines