Wyoming Highway 338
|Maintained by WYDOT|
|Length:||15.03 mi (24.19 km)|
I-90 / I-90 Bus. / US 14 Bus. / US 87 Bus. in Sheridan
|North end:||MT 314 at Montana - Wyoming State Line|
Route description 
Wyoming Highway 338 begins its southern end in Sheridan at I-90 BUS/US 14 BUS/US 87 BUS (N. Main Street) and exit 20 of Interstate 90, which also carries US 14 and US 87 at this point. Named Decker Road for the Montana community it reaches, WYO 338 travels north, passing under I-90, and paralleling it to the east. At approximately 4.2 miles, WYO 338 intersects the eastern terminus of WYO 339 (Jensick Connector) which links Highway 338 with exit 16 of I-90. Past 339, WYO 338 curves due east before turning back north on which it will stay to complete its routing. At 15.03 miles, Wyoming Highway 338 reaches its northern terminus at Montana Secondary Highway 314 at the Montana State Line.
Major intersections 
The entire route is in Sheridan County.
I-90 / I-90 Bus. / US 14 Bus. / US 87 Bus.
|Western terminus of WYO 338
Exit 20 (I-90/US 14/US 87)
|north of Sheridan||4.16||6.69||To I-90 / WYO 339||Eastern terminus of WYO 339
To exit 16 (I-90/US 14/US 87)
|Montana-Wyoming State Line||15.03||24.19||S-314||Northern terminus of WYO 338
Continuation into Montana
|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 2010-02-24.
- Yahoo Maps. Overview Map of Wyoming Highway 338 (Map). http://maps.yahoo.com/#mvt=m&lat=44.829022&lon=-106.968262&zoom=15&q1=44.82056%2C-106.955473&q2=44.827013%2C-106.98487. Retrieved 2011-02-23.
- aaroads.com - Wyoming Highway 338