U.S. 185 was one of several U.S. routes that were decommissioned in Wyoming by early 1936. Established in 1926, U.S. 185 was part of the main route from Cheyenne and Casper. When U.S. 87 was recommissioned to run through Cheyenne in 1936, U.S. 185 was removed. The 124 mile long route route of old U.S. 185 was supplanted by I-25 and U.S. 87 between Cheyenne and Orin.
A 1933 map shows U.S. 185 in its entirety plus Wyoming Highway 185, which followed the route of the modern day WY 59 between Douglas and Gillette. Whether this state route was planned as a northern extension to U.S. 185 is unclear, but it is unlikely that it was completed before it was decommissioned in 1936. WY 185 was renumbered as WY 387 in 1937.
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Page Updated 06-01-2023.