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|direction_b=East |terminus_b= at the Montana state line |previous_type=US |previous_route=89 |next_type=US |next_route=91 }} In the U.S. state of Idaho, Interstate 90 has a routing in the panhandle. Traveling east from Spokane, Washington, I-90 passes through Post Falls and Coeur d'Alene, over Fourth of July Summit, and through the Silver Valley before entering Montana at Lookout Pass. I-90 is a major east-west route and the only freeway in northern Idaho. I-90 is the third longest stretch of Interstate highway in Idaho. Interstate 84 and Interstate 15 are longer. Interstate 86 and Interstate 184 are shorter. I-90 is the only coast-to-coast Interstate in Idaho. ==Route description== Interstate 90 enters Idaho and Kootenai County just east of the Spokane River bridge near the community of State Line, the smallest city in Idaho. It proceeds east through Post Falls to Coeur d'Alene, the county seat, and meets U.S. Route 95. I-90 turns southeast and passes north of downtown, which is accessible via an Interstate Business Loop, and Lake Coeur d'Alene. It continues east-southeast to Fourth of July Summit at an elevation of and down to Cataldo, home to the Old Cataldo Mission built in 1853. Shortly after leaving Cataldo, I-90 enters Shoshone County and passes through or near the communities of Pinehurst, Kellogg, Osburn, Wallace, and Mullan. I-90 leaves the county and state at Lookout Pass at ) and enters Montana.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Interstate 90 in Idaho」の詳細全文を読む スポンサード リンク
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