Highway 2 (MT-2) is a state route in the U.S. state of Montana. The road forms an east-west route in the west of the state, from Butte to Three Forks. Highway 2 is 101 kilometers long.
Highway 2 begins in the mining town of Butte, one of the larger towns in Montana. Here is a junction with I-90 and Highway 2 leads south from Butte through a flat valley that is somewhat urbanized. The road has 2×2 lanes until just outside Butte, then curves southeast and continues through the Rocky Mountains. The road crosses the Continental Divide via the 1,935-foot Pipestone Pass. The surrounding mountains are heavily forested and not much higher than Highway 2. The road then descends quite gradually to Whitehall, which is at an altitude of 1,300 meters. The road parallels I-90 and crosses it twice at Cardwell. From Cardwell to Willow Creek, Highway 2 leads through a deep canyon, surrounded by barren rock mountains. Then follows a double numbering with the US 287to Three Forks. Highway 2 then passes through Three Forks and ends at I-90 on its east side.
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History
Originally part of US 10, the road was Montana’s main east-west route until the 1960s. The Pipestone Pass across the Continental Divide was one of the most important transitions in the Rocky Mountains. The road was paved before 1935.
Traffic intensities
20,000 vehicles drive daily in Butte, descending to 2,000 vehicles outside the city and 700 vehicles over Pipestone Pass. 500 vehicles and 1,200 vehicles pass through the canyon between Cardwell and Willow Creek at Three Forks.
State Route 21 in Montana
MT-21
Begin
Augusta
End
Simms
Length
21 mi
Length
34 km
Route
AugustaSimms
Highway 21 (MT-21) is a state route in the U.S. state of Montana. The road forms an east-west route in the west of the state, between Augusta and Simms. Highway 21 is 34 kilometers long.
Travel directions
Highway 21 begins in Augusta on US 287. Although Highway 21 is an east-west route, it is not possible to drive further west on site, as there is no route through the Rocky Mountains. Highway 21 runs just east of the Rocky Mountains across the High Plains. Highway 21 heads east across a plain and ends at the village of Simms on Highway 200.
History
Highway 21 was originally numbered Highway 20, which followed more or less the same route, only continuing slightly east to US 89 at Vaughn. At the time, the road was approximately 55 kilometers long. The road was paved in the second half of the 1930s, and was renumbered to Highway 21 circa 1949, when Highway 20 took a more southerly route via what is now Highway 200.
Traffic intensities
400 to 700 vehicles use Highway 21 daily.
State Route 23 in Montana
MT-23
Get started
Sydney
End
North Dakota
Length
7 mi
Length
12 km
Route
SydneyNorth Dakota
Highway 23 (MT-23) is a state route in the U.S. state of Montana. The road forms a short east-west route in the far east of the state, from Sidney to the North Dakota border. Highway 23 is 12 kilometers long.
Travel directions
Highway 23 begins just south of the town of Sidney at an intersection with Highway 16 and Highway 200. The road then crosses the Yellowstone River and passes through an area of badlands before ending 12 kilometers at the border with the state of North Dakota. Then State Route 68 in North Dakota continues to Alexander.
History
Highway 23 was one of the original state highways, but was longer at the time and ran from Circle to the border with North Dakota in the 1930s. The road numbering has been changed several times around Sidney. In 1939, Highway 23 west of Sidney was dropped, presumably because it was a poorly developed dirt road. The road became part of Highway 16 in 1950, eliminating number 23 entirely. In 1951, it was redesignated Highway 23 from Sydney to the North Dakota border. In 1952 the number was extended again to Circle. In 1954, Highway 23 from Sydney was split, Highway 23N from Sidney to Fairview and there to the border with North Dakota, and Highway 23S from Sidney directly to the border with North Dakota. This situation existed until 1960, when Highway 23N was renumbered as Highway 20, and Highway 23S became simply Highway 23. In addition, the section between Circle and Sidney was then renumbered Highway 20, which became Highway 200 in 1968.
Traffic intensities
Every day, 2,700 vehicles cross the bridge over the Yellowstone River and 1,600 vehicles cross the border with North Dakota.
