15 / Elk Park Pass

Elk Park Pass, elevation 6,352 ft (1,936 m), is a mountain pass on the Continental Divide in southwestern Montana. It is traversed by Interstate 15 and is one of three crossings of the Divide by the Interstate (all in Montana), the others being
Monida Pass (on the border with Idaho) and Deer Lodge Pass southwest of Butte. Elk Park Pass lies on the border between Silver Bow and Jefferson counties and is remarkable for its highly asymmetrical nature. The approach from the north is through namesake Elk Park, a high, mostly treeless plain (like South Park in Colorado or the Sierra Valley in California), and the grade is almost imperceptible. The elevation at the northeast end of the park, about 10 miles (16 km) from the pass, is about 6,200 ft (1,900 m), only 152 ft (46 m) lower than the pass itself. However, at the south end, the highway drops 750 ft (230 m) from the pass into Butte over a distance of only about 4 miles (6.4 km).
Elk Park Pass
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