Highway 585

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Wyoming Highway 585

Connecting U.S. 85 at Four Corners, north of Newcastle, with Business Loop I-90 and U.S. 14 in Sundance, WY-585 is a primary state route. The state highway runs 28.05 miles through Weston and Crook Counties.

WY 585 first appeared in 1933 and has maintained its alignment since that time. At that time, U.S. 85 had four U.S. auxiliary routes: U.S. 185, U.S. 285, U.S. 385, and U.S. 485. Planners possibly hoped to make Wyoming 585 into a U.S. 585, but that never happened. DeLorme's 1992 Wyoming Atlas and Gazetteer mistakenly refer to Wyoming 585 as U.S. 585. It never was a U.S. route, not even when U.S. routes as short as 28 miles long were common, such as U.S. 116, U.S. 320, and U.S. 420.

Wyoming Highway 585 North
Regulatory signs posted along WY-585 north ahead of the Port of Entry near Sundance. The main sign in this assembly indicates that even vehicles which are legally regarded as merchandise in transit must stop at the port of entry in Sundance.

Regulatory signs posted along WY-585 north ahead of the Port of Entry near Sundance. The main sign in this assembly indicates that even vehicles which are legally regarded as merchandise in transit must stop at the port of entry in Sundance.

August 2000

The next sign in sequence indicates that all vehicles delivering in the state of Wyoming must stop at the Port of Entry on northbound Wyoming 585.

The next sign in sequence indicates that all vehicles delivering in the state of Wyoming must stop at the Port of Entry on northbound Wyoming 585.

August 2000

The final sign indicates that commercial vehicles also must stop at the Port of Entry on northbound Wyoming 585.

The final sign indicates that commercial vehicles also must stop at the Port of Entry on northbound Wyoming 585.

August 2000

This Wyoming motorcycles state law sign was posted along U.S. 14 beyond the interchange with Interstate 90. The sign is aimed at motorcyclists crossing the state line from South Dakota, where a major biker rally is held at Sturgis in the first week of August.

This Wyoming motorcycles state law sign was posted along U.S. 14 beyond the interchange with Interstate 90. The sign is aimed at motorcyclists crossing the state line from South Dakota, where a major biker rally is held at Sturgis in the first week of August.

August 2000

Wyoming Highway 585 reassurance marker posted near Sundance.

Wyoming Highway 585 reassurance marker posted near Sundance.

August 2000

Many of the areas along Wyoming 585 are open range with limited or no fencing to separate Wyoming's well known wildlife and ranch animals from the highway. All motorists are advised to be mindful of potential wildlife or ranch animals (especially cattle) in the roadway.

Many of the areas along Wyoming 585 are open range with limited or no fencing to separate Wyoming's well known wildlife and ranch animals from the highway. All motorists are advised to be mindful of potential wildlife or ranch animals (especially cattle) in the roadway.

August 2000

Wyoming Highway 585 South
Wyoming 585 commences south from Business Loop I-90 and U.S. 14 near Downtown Sundance. The state highway crosses Sundance Creek southeast to meet U.S. 85 at Four Corners north of Newcastle.

Wyoming 585 commences south from Business Loop I-90 and U.S. 14 near Downtown Sundance. The state highway crosses Sundance Creek southeast to meet U.S. 85 at Four Corners north of Newcastle.

07/05/08

Beyond Sundance Creek, Wyoming 585 proceeds south through a small residential area.

Beyond Sundance Creek, Wyoming 585 proceeds south through a small residential area.

07/05/08

Southbound Wyoming 585 (Sixth Street) advances to the interchange with Interstate 90. I-90 travels west to Moorcroft, Gillette and Sheridan and east to Spearfish, South Dakota.

Southbound Wyoming 585 (Sixth Street) advances to the interchange with Interstate 90. I-90 travels west to Moorcroft, Gillette and Sheridan and east to Spearfish, South Dakota.

07/05/08

A Wyoming 585 south reassurance shield precedes the exchange with I-90 along Sixth Street.

A Wyoming 585 south reassurance shield precedes the exchange with I-90 along Sixth Street.

07/05/08

Wyoming 585 (Sixth Street) south at the entrance ramp for Interstate 90 west to Moorcroft, Gillette, Sheridan, Billings, and ultimately Seattle, Washington. I-90 is also part of the most direct route west to Yellowstone National Park either via U.S. 14 or U.S. 16.

Wyoming 585 (Sixth Street) south at the entrance ramp for Interstate 90 west to Moorcroft, Gillette, Sheridan, Billings, and ultimately Seattle, Washington. I-90 is also part of the most direct route west to Yellowstone National Park either via U.S. 14 or U.S. 16.

07/05/08

Interstate 90 east continues from Spearfish to Sturgis and Rapid City. I-90 connects with routes to the northern Black Hills, including Spearfish Canyon and Deadwood.

Interstate 90 east continues from Spearfish to Sturgis and Rapid City. I-90 connects with routes to the northern Black Hills, including Spearfish Canyon and Deadwood.

07/05/08

If Wyoming 585 and U.S. 85 experience inclement weather that causes a road closure, this sign would flash. In that case, motorists are directed to return to Sundance.

If Wyoming 585 and U.S. 85 experience inclement weather that causes a road closure, this sign would flash. In that case, motorists are directed to return to Sundance.

07/05/08

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Page Updated Sunday August 28, 2011.