Mullan Pass
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| Mullan Pass | |
|---|---|
 Historical marker placed at Mullan Pass. |
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| Elevation | 1,799 m./5,902 ft. |
| Location | Montana,  United States |
| Range | Rocky Mountains |
| Coordinates | |
| Traversed by | Austin-Mullan Pass Road and Montana Rail Link (via Mullan Pass Tunnel). |
The Mullan Pass is a mountain pass in the Rocky Mountains of Montana in the United States. It sits on the continental divide on the border between Powell County, Montana and Lewis and Clark County, Montana, 13.25 miles west of Helena, Montana in Helena National Forest at a height of 5,902 ft (1,799m).
The Northern Pacific Railroad used the pass for its line from Billings, Montana to Spokane, Washington built in 1883. The line is currently operated by Montana RailLink. The rail line crosses under the pass and continental divide at an elevation of 5,566 ft (1,697 m) via the 3,896 foot long Mullan Tunnel.
The pass was named after Lieutenant John Mullan, the army engineer who first crossed the pass on March 22, 1854 and later supervised construction of Mullan Road, the first road over the pass, in 1860.
 West portal of Mullan Tunnel. |
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