U.S. Route 191 in Wyoming
section of U.S. Numbered Highway in Sweetwater, Sublette, Teton, and Park counties in Wyoming, United States
U.S. Route 191 (US 191) is a part of the U.S. Highway System that travels Douglas, Arizona on the Mexican border, north to Loring, Montana on the Canadian border; broken into two segments by Yellowstone National Park where unnumbered park roads serve as a connector. In the state of Wyoming, it extends approximately 289 miles (465 km) from the Utah state line near Dutch John, Utah to the southern entrance of Yellowstone National Park. The current US 191 alignment through Wyoming was established in 1981, replacing U.S. Route 187 (US 187) and Wyoming Highway 373 (WYO 373), making it relatively new compared to other U.S. Highways.
Route description
US 191 enters Wyoming near a geographical feature known as Minnie's Gap, just east of Flaming Gorge National Recreation Area. The route proceeds 51 miles (82 km) north through rugged desert country following an alignment mostly constructed during the 1970s, to Interstate 80 at exit 99, just west of Rock Springs. This segment of the route is known locally as "East Flaming Gorge Road." The route is then concurrent for 5.6 miles (9.0 km) with I-80 and US 30 eastward through Rock Springs, exiting I-80 at Elk Street (exit 104). Officially, the WYDOT lists US 191 beginning at I-80 Business and US 30 Business, the location of former US 187 southern terminus; however, the section is unsigned in favor of it being concurrent I-80.
US 191 continues northward at Rock Springs, traveling through high desert country for 98 miles (158 km) through Eden and Farson to Pinedale, where it becomes concurrent with Wyoming Centennial Scenic Byway. The travels 11 miles (18 km) to Daniel where it meets US 189, beginning their 67-mile (108 km) concurrency. Continuing north, the road traverses increasingly mountainous terrain, entering the Bridger-Teton National Forest and passing through the small community of Bondurant before descending through the narrow Hoback River Canyon to an intersection with US 26 and US 89 at Hoback Junction.
This brief starts where responsible research should: with the source description of “U.S. Route 191 in Wyoming” as section of U.S. Numbered Highway in Sweetwater, Sublette, Teton, and Park counties in Wyoming, United States. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the places & architecture register because the source frames it as section of U.S. Numbered Highway in Sweetwater, Sublette, Teton, and Park counties in Wyoming, United States. Its deeper value depends on whether names, dates, institutions and citations support that framing.
The strongest evidence will usually combine a dated visual record with documents produced by the authority responsible for the place. The source revision retrieved here is dated Mar 13, 2026. The linked authority identifier is Q15733286. Authority coordinates are 41.000, -109.431. None of the 4 selected statements returned an explicit reference. The first chronological checks are 1981.
Modern boundaries and familiar names can conceal earlier jurisdictions or structures that do not align with the present site. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “U.S. Route 191 in Wyoming”, its source revision and the description used here.
- Expand the search: follow U.S. Route 191 in Wyoming primary sources, U.S. Route 191 in Wyoming archive and Route research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “U.S. Route 191 in Wyoming”?
- What physical evidence or contemporary plan supports the description?
- Which authority defined the place, boundary or structure at the relevant date?
Search terms from this dossier
This entry incorporates text from “U.S. Route 191 in Wyoming” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.