Interstate 90 in Idaho

Interstate 90
Route information
Maintained by ITD
Length:	73.888 mi (118.911 km)
Major junctions
West end:	I‑90 at the Washington state line
	SH-41 in Post Falls US-95 in Coeur d'Alene SH-97 near Coeur d'Alene SH-3 near Cataldo SH-4 in Wallace
East end:	I‑90 at the Montana state line
Highway system
Interstate Highway System Main Auxiliary Suffixed Business State Highways in Idaho Interstate U.S. State ← US-89 US-91 →

In the U.S. state of Idaho, Interstate 90 has a 74-mile-long (119 km) 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 freeway route 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.

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 3,081 feet (939 m) and down to Cataldo, home to the Old Cataldo Mission built 164 years ago in 1853.

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Wikipedia