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100 years of US routes: 1926-2026
US route endpoint
The highway running along the east side of Glacier National Park has been a US route since the beginning, in 1926. However, back then it was designated as US 87:
c. 1927, Rand McNally
At the time, the US 89 designation went only as far north as Spanish Fork UT. But then in 1935 US 89 was extended northward along its current path: through the rest of Utah, plus Wyoming and Montana (via an implied route through Yellowstone). It met US 87 at Armington MT (southeast of Great Falls), and replaced that route up to its present terminus on the Canada border, at a port of entry called Piegan. (US 87 then ended at Great Falls for a few years, but in the 1940s it was extended up to Havre.) As of 2026, the last northbound US 89 marker was at the junction with MT hwy. 17, six miles south of the border:
Sanderson, Sep. 2026
This photo shows the actual terminus of US 89, looking northward at the Piegan border crossing:
Hamilton, Jul. 2004
Until 1934 that was the north end of US 87. Since then it has been the north end of US 89. Just ahead the road becomes Alberta provincial hwy. 2, and the Canadian port of entry is known as Carway. In these next photos we are looking south from the north beginning at the first southbound US 89 marker:
Hamilton, Jul. 2004
Sanderson, Sep. 2026
The mountains in the distance are in Glacier National Park.
Research and/or image credits: Alan Hamilton; Dale Sanderson
Page originally created 2004;last updated Sep. 15, 2026.
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