Back U.S. Highway 91 German U.S. Route 91 Spanish جاده ۹۱ ایالات متحده آمریکا Persian U.S. Route 91 French U.S. Route 91 Italian U.S. Route 91 Portuguese U.S. Route 91 SIMPLE U.S. Route 91 Swedish ทางหลวงสหรัฐหมายเลข 91 Thai 91号美国国道 Chinese
 U.S. Route 91 | ||||
|---|---|---|---|---|
 US-91 highlighted in red | ||||
| Route information | ||||
| Maintained by UDOT and ITD | ||||
| Length | 172.663 mi[a] (277.874 km) | |||
| Existed | 1926[1]–present | |||
| Major junctions | ||||
| South end |   I-15 / I-84 in Brigham City, UT | |||
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| North end |   I-15 BL / US 26 in Idaho Falls, ID | |||
| Location | ||||
| Country | United States | |||
| States | Utah, Idaho | |||
| Counties | UT: Box Elder, Cache ID: Franklin, Bannock, Bingham, Bonneville | |||
| Highway system | ||||
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U.S. Route 91 or U.S. Highway 91 (US 91) is a 172.7-mile-long (277.9 km) north–south United States highway running from Brigham City, Utah, to Idaho Falls, Idaho, in the U.S. states of Idaho and Utah. Despite the "1" as the last digit in the number, US 91 is no longer a cross-country artery, as it has mostly been replaced by Interstate 15.[2] The highway currently serves to connect the communities of the Cache Valley to I-15 and beyond. Prior to the mid-1970s, US 91 was an international commerce route from Long Beach, California, to the Canada–US border north of Sweetgrass, Montana. US 91 was routed on the main streets of most of the communities it served, including Las Vegas Boulevard in Las Vegas and State Street in Salt Lake City. From Los Angeles to Salt Lake, the route was built along the corridor of the Arrowhead Trail. A portion of the highway's former route in California is currently State Route 91.
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- ^ Bureau of Public Roads & American Association of State Highway Officials (November 11, 1926). United States System of Highways Adopted for Uniform Marking by the American Association of State Highway Officials (Map). 1:7,000,000. Washington, DC: United States Geological Survey. OCLC 32889555. Retrieved November 7, 2013 – via Wikimedia Commons.
- ^ Cite error: The named reference
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