Wyoming Highway 320
|Old Yellowstone Highway
North Wheatland Highway
|Maintained by WYDOT|
|Length:||12.33 mi (19.84 km)|
I‑25 Bus. / US 87 Bus. in Wheatland
|North end:||US 26 in Dwyer|
Wyoming Highway 320 is a north–south state road in central Platte County, Wyoming that connects I-25 Business and US 87 Business in Wheatland. to US 26 in Dwyer, and was once part of the Yellowstone Highway.
Wyoming Highway 320 begins its south end at I-25 Business/US 87 Business (9th Street/Swanson Road) in Wheatland. From here WYO 320 heads north, intersecting East Laramie River Road at 4.6 miles (7.4 km), which can take you west to I-25 (exit 84). Highway 320 continues north till its end at US 26 in Dwyer
Wyoming Highway 320 was originally designated in Fremont County along what is now Wyoming Highway 789 between Lander and Shoshoni between 1939 and 1950. It was originally US 320 between 1926 and 1938 but in 1939 was recommissioned as Wyoming Highway 320. In 1940, when US 287 and Wyoming Highway 287 were rerouted, Wyoming 320 was extended southwest to Lander. WYO 320 maintained this until 1950, when US 26 was commissioned. WYO 320 lasted until 1954, when Wyoming Highway 789 was commissioned, thereby replacing it.
Additionally, The highway that currently carries Wyoming Highway 320 was originally part of US 87 and before that US 185 (US 185 between Cheyenne and Casper was decommissioned and replaced with US 87 in 1936) Between 1956 and the 1980s, as more of Interstate 25 was completed, the original routing of US 87 was recommissioned on the Interstate 25 freeway.
The entire route is in Platte County.
I‑25 Bus. / US 87 Bus.
|Southern Terminus of WYO 320|
|North of Lakeview North||4.6||7.4||East Laramie River Road to I‑25 / US 87||West to I-25/US 87 (exit 84)|
|Dwyer||12.33||19.84||US 26||Northern Terminus of WYO 320|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi
- WYDOT. Wyoming Department of Transportation Reference Marker Book - November 2004 (Map). http://www.dot.state.wy.us/webdav/site/wydot/shared/Planning/Reference%20Marker%20Book.pdf. Retrieved 2011-03-31.
- aaroads.com - Wyoming Routes 300-399
- Yahoo Maps. Overview Map of Wyoming Highway 320 (Map). http://maps.yahoo.com/#mvt=m&lat=42.147011&lon=-104.961944&zoom=12&q1=42.067629%2C-104.954091&w0=42.14049586965895%2C-104.94140625&q2=42.234705%2C-104.973102. Retrieved 2011-04-07.
- U.S. Route 185
- U.S. Route 87
- Official 2003 State Highway Map of Wyoming