Wyoming Highway 487

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Wyoming Highway 487
Shirley Basin Road
WYO 487 highlighted in red
Route information
Maintained by WYDOT
Length	71.56 mi (115.16 km)
Existed	1959–present
Major junctions
South end	US 30 / US 287 in Medicine Bow
Major intersections	WYO 77 WYO 77
North end	WYO 220
Location
Country	United States
State	Wyoming
Counties	Carbon, Natrona
Highway system
Wyoming State Highway System Interstate US State
← WYO 452 → WYO 514

Wyoming Highway 487 (WYO 487) is a 71.56-mile-long (115.16 km) state highway in northeastern Carbon County, Wyoming and southeastern Natrona County, Wyoming that runs from its south end at US 30/US 287 to a north end at WYO 220.

Wyoming Highway 487 begins its south end at US 30/US 287 (Old Lincoln Hwy.) in Medicine Bow. WYO 487 travels north towards Shirley Basin and intersects WYO 77 at 22.1 miles (35.6 km), that route's southern terminus. Again WYO 487 intersects WYO 77 at its north end, but at 45 miles (72 km). WYO 487 travels another 27 miles (43 km) to its north end at Wyoming Highway 220 which is located 11 miles (18 km) NE of Alcova and 19 miles (31 km) SE of Evansville.^[1]

The Medicine Bow–Casper Cutoff was designated as Highway 487 by the Wyoming Highway Commission in March 1959.^[2]

County	Location	mi[1]	km	Destinations	Notes
Carbon	Medicine Bow	0.00	0.00	US 30 / US 287	Southern Terminus of WYO 487
	​	22.1	35.6	WYO 77	Southern Terminus of WYO 77
	​	45.0	72.4	WYO 77	Northern Terminus of WYO 77
Natrona	​	71.56	115.16	WYO 220	Northern Terminus of WYO 487
1.000 mi = 1.609 km; 1.000 km = 0.621 mi