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Canada to Mexico Highway
Route information
Length	407.14 mi (655.23 km)
Major junctions
Major intersections	I-80 US-30 near Creston Junction US-287 in Rawlins WY-220 in Three Forks WY-28 south of Lander US-26 in Riverton US-20 in Shoshoni WY-120 in Thermopolis US-16 in Worland US-14 and US-310 in Greybull US-14 Alt in Lovell WY-114 near Deaver
Location
Country	United States
State	Wyoming
Counties	Carbon, Sweetwater, Natrona, Fremont, Hot Springs, Washakie, Big County
Highway system
Wyoming State Highway System Interstate US State
← WYO 585 → WYO 10

Wyoming 789 is a state route in Wyoming. Wyoming 789 runs north to south from the Montana border to the Colorado border. For most of its length, it is joined with other routes.

Route description

Carbon County

Wyoming 789 begins at the Colorado border just south of Baggs. It travels north for about four miles to Baggs. After Baggs, it continues north for about 45 miles until it reaches the county line.

Sweetwater County

After crossing the county line, Wyoming 789 travels north for about 6 miles where it reaches Exit 187 at Interstate 80/US 30. Wyoming 789 joins I-80/US-30 eastbound.

Carbon County

Wyoming 789 with I-80/US-30 re-enters Carbon County. Just west of Rawlins, Wyoming 789 exits I-80/US-30 at Exit 211. Wyoming 789 joins Business Loop 80 through Rawlins. North of town, Wyoming 789 intersects US 287 and joins it north for 50 miles to the county line.

Natrona County

Wyoming 789 travels through this county for about 2 miles.

Fremont County

Wyoming 789 with US-287 continues heading in a northwest direction passing through the towns of Jeffrey City and Sweetwater Station. About 40 miles from Sweetwater Station, Wyoming 789/US-287 arrives in the city of Lander. Wyoming 789 splits from US-287 in Lander and continues northeast for 24 miles alone to Riverton. Wyoming 789 joins US-26 until they reach Shoshoni. Wyoming 789/US-26 intersect US-20 where Wyoming 789 continues north with US-20 west.

Hot Springs County

Wyoming 789/US-20 continue through the Wind River Canyon into Thermopolis. From there, the highway breaks off in a northeasterly direction into Washakie County.

Washakie County

From the county line, the highway travels approximately 21 miles before crossing the Big Horn River into Worland where it joins US-16-20.

Big Horn County

Upon crossing into Big Horn County, Wyoming 789/US-16-20 veers back to the northwest and crosses back over the Big Horn River after reaching Manderson. It continues on 20 miles to the north through Basin and Greybull. Upon reaching Greybull, Wyoming 789 along with US-16-20 head west and join US-14 for about five miles.

At that point, Wyoming 789 abandons US-14-16-20 and returns to its northern path along with US-310 for about 28 miles to the town of Lovell. For three miles, Wyoming 789/US-310 runs west along US-14A. Wyoming 789/US-310 then turns north three miles to Cowley and then heads west seven miles to Deaver.

Park County

From Deaver, Wyoming 789/US-310 runs six miles north along the Park County line to Frannie. The highway leaves Wyoming on the eastern edge of Park County and enters into Montana.

History

Highway 789 was part of a proposed border-to-border U.S. Route 789 that would have run from Sweetgrass, Montana to Nogales, Arizona. After the U.S. 789 proposal was rejected by AASHTO, Highway 789 became part of a series of state highways numbered "789" running along the proposed route. Wyoming, however, was the only state that actually renumbered an existing highway (the other states simply added a concurrent SR-789 over existing highways). Eventually, most of these other 789s were deleted.

References

1. "U.S. Highway 789 (Proposed/Never Commissioned)". Retrieved 2007-10-02.

• State highways in Wyoming