Wyoming Highway 339

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Wyoming Highway 339 marker

Wyoming Highway 339
Jensick Connector
Route information
Maintained by WYDOT
Length: 1.02 mi[1] (1.64 km)
Major junctions
West end: I‑90 / US 14 / US 87 northwest of Sheridan
East end: WYO 338 north of Sheridan
Counties: Sheridan
Highway system

State highways in Wyoming

WYO 338 WYO 340

Wyoming Highway 339 is a short 1.02-mile (1.6 km) east-west Wyoming State Road located in north-central Sheridan County.

Route description[edit]

Wyoming Highway 339 begins its western end at Interstate 90/US 14/US 87 (exit 16) and travels east just over 1 mile to end at Wyoming Highway 338 (Decker Road).[2][3] WYO 338 travels south to serve Sheridan as well as north to the Montana State Line and Decker, Montana.

The Wyoming Port of Entry is located on the west side of the I-90/WYO 339 (Dietz) interchange[4] and is the only two-state combination Port in Wyoming that issues both Wyoming and Montana permits.[5]


The length of Highway 339 between Wyoming Highway 338 and Interstate 90 is the original routing of US 14/US 87 route prior to the construction of Interstate 90.[3]

Major intersections[edit]

The entire route is in Sheridan County.

Location Mile km Destinations Notes
northwest of Sheridan 0.00 0.00 I‑90 / US 14 / US 87 Western terminus of WYO 339
Exit 16 (I-90/US 14/US 87)
north of Sheridan 1.02 1.64 WYO 338 Eastern terminus of WYO 339
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


External links[edit]