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Comprehensive Guide to Interstate 90 Montana 2026: Travel, Safety, and Logistics

"Interstate 90 (I-90) in Montana represents the longest segment of any interstate within a single state, stretching over 554 miles from the Idaho border at Lookout Pass to the North Dakota border near Wibaux. As of 2026, this corridor remains the primary artery for East-West commerce, tourism, and local transit in the Big Sky Country. Managing the diverse topography—ranging from the rugged Bitterroot and Rocky Mountains to the expansive Great Plains—requires a deep understanding of Montana Department of Transportation (MDT) protocols, seasonal weather shifts, and the recently modernized infrastructure that defines the 2026 travel experience. I..."

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