Interstate 80 (I-80) is an east–west transcontinental freeway that crosses the United States from downtown San Francisco, California, to Teaneck, New Jersey, in the New York metropolitan area. The highway was designated in 1956 as one of the original routes of the Interstate Highway System; its final segment was opened in 1986. The second-longest Interstate Highway in the United States after I-90, it runs through many major cities, including Oakland, Sacramento, Reno, Salt Lake City, Omaha, Des Moines, and Toledo and passes within 10 miles (16 km) of Chicago, Cleveland, and New York City.
U.S. Highway 26 is an east–west United States Numbered Highway that runs from Seaside, Oregon, to Ogallala, Nebraska. When the U.S. Numbered Highway System was first defined, it was limited to Nebraska and Wyoming; by the 1950s, it continued into Idaho and Oregon. The highway's eastern terminus is in Ogallala at an intersection with Interstate 80 (I-80). Its western terminus is south of Seaside at an intersection with US 101. Prior to 2004, the route's last 20 miles (32 km) were cosigned with US 101 from the highways' junction south of Seaside north to Astoria where its intersection with US 30 was also US 30's western terminus. Long segments of the highway follow the historic Oregon Trail. At its peak, immediately before the establishment of the Interstate Highway System, US 26 was 1,557 miles (2,506 km) in length and terminated in Astoria.
U.S. Route 287 (US 287) is a north–south United States highway. At 1,791 miles (2,882 km) long, it is the second longest three-digit U.S. Route, behind US 281. It serves as the major truck route between Dallas-Fort Worth and Amarillo, Texas, and between Fort Collins, Colorado, and Laramie, Wyoming. The highway is broken into two segments by Yellowstone National Park, where unnumbered park roads serve as a connector.
Interstate 80 (I-80) is a part of the Interstate Highway System that runs from San Francisco, California, to Teaneck, New Jersey. In Wyoming, the Interstate Highway runs 402.76 miles (648.18 km) from the Utah state line near Evanston east to the Nebraska state line in Pine Bluffs. I-80 connects Cheyenne, Wyoming's capital and largest city, with several smaller cities along the southern tier of Wyoming, including Evanston, Green River, Rock Springs, Rawlins, and Laramie. The highway also connects those cities with Salt Lake City to the west and Omaha to the east. In Cheyenne, I-80 intersects I-25 and has Wyoming's only auxiliary Interstate, I-180. The Interstate runs concurrently with US Highway 30 (US 30) for most of their courses in Wyoming. I-80 also has shorter concurrencies with US 189 near Evanston, US 191 near Rock Springs, and US 287 and Wyoming Highway 789 (WYO 789) near Rawlins. The Interstate has business loops through all six cities along its course as well as a loop serving Fort Bridger and Lyman east of Evanston.
Interstate 25 (I-25) is a part of the Interstate Highway System that runs from Las Cruces, New Mexico, to Buffalo, Wyoming. In Wyoming, the Interstate Highway runs 300.530 miles (483.656 km) from the Colorado state line near Cheyenne north to its national terminus at I-90 near Buffalo. I-25 connects Wyoming's largest city and capital, Cheyenne, with its second largest city, Casper, and the smaller communities of Wheatland, Douglas, and Buffalo. The highway also connects those cities with Denver and Billings via I-90. I-25 runs concurrently with U.S. Route 87 (US 87) for almost its entire course in Wyoming. The highway also has extensive concurrencies with US 20 and US 26 along its east–west segment through the North Platte River valley. The Interstate has business loops through Cheyenne, Chugwater, Wheatland, Douglas, Glenrock, Casper, and Buffalo.
Interstate 90 (I-90) in the US state of Wyoming traverses the northeastern corner of the state, passing through the cities and communities of Sheridan, Buffalo, and Gillette.
Wyoming Highway 130 is a 98.52-mile-long (158.55 km) state highway in the U.S. State of Wyoming. It is known locally as the Snowy Range Road. It makes its way west from Laramie across the plains, and rises over the Medicine Bow Mountains. The road then turns north through the town of Saratoga, and ends at Interstate 80 (I-80). The stretch of road over the mountains is a National Forest Byway. WYO 130 over Snowy Range Pass is closed during winter (November–May).
Wyoming Highway 212 is a 14-mile (23 km) state highway in Wyoming. It is locally known as Four Mile Road from Wyoming Highway 219 to East Four Mile Road intersection at the curve, and College Drive from US 85/I-25 BUS. SR 212 acts like a bypass of Cheyenne, but in some portions it sneaks into the city limits. The portions that the bypass enters the city limits are between the railroad tracks and Ranchettes, and the northern terminus. SR 212 is signed north–south.
Wyoming Highway 789 (WYO 789) is a 407-mile-long (655 km) state highway in the U.S. state of Wyoming. WYO 789 travels south-to-north from the Colorado state line to the Montana state line. For most of its length, it is concurrent with other routes. It was the path of a formerly-proposed U.S. Route 789 that was canceled.
Wyoming Highway 225 is a 11.21-mile-long (18.04 km) state highway, named Otto Road, located in southwestern Laramie County west of Cheyenne, in the U.S. state of Wyoming.
Wyoming Highway 222 is a 1.81-mile-long (2.91 km) Wyoming State Road known as Fort Access Road located in Laramie County, on the western edge of Cheyenne.
Wyoming Highway 210 (WYO 210), also known as Happy Jack Road, is a 37.79-mile (60.82 km) state highway in Laramie and Albany counties in Wyoming, United States, that runs from Cheyenne to Interstate 80/U.S. Route 30 (I-80/US 30), 10 miles (16 km) east of Laramie.
Wyoming Highway 211 is a 43.88-mile-long (70.62 km) Wyoming State Road known as Horse Creek Road within Laramie County, and as Iron Mountain Road in Platte County.
Wyoming Highway 218 was an American state highway in southwestern Laramie County, Wyoming, east of Buford and west of Cheyenne. WYO 218, named Harriman Road, traveled from Interstate 80 and US 30 south for only 1.77 miles (2.85 km) as state maintenance ended there. The roadway continued south as Laramie County Route 102 to the Colorado State Line and the town of Harriman. From there the roadway continues in Colorado as Larimer County Route 37, named Red Mountain Road, to US 287. Mileposts along WYO 218 increased from north to south.
Wyoming Highway 230 is a 78.74-mile-long (126.72 km) state highway in the U.S. State of Wyoming. It is known locally as Rivers Road and travels from WYO 130 approximately 8 miles (13 km) south of Saratoga south from there to intersect WYO 70 in Riverside and then heads southeast to the Colorado-Wyoming State Line. The Route continues southeast in Colorado as Colorado State Highway 125, then it turns northeast as Colorado State Highway 127. At the Wyoming-Colorado State Line, WYO 230 resumes. WYO 230 then heads northeast towards Laramie to end at Business Loop I-80/US 30/US 287 in Laramie. WYO 230 provides a scenic and less-traveled alternative for travelers who want to avoid Interstate 80 and US 30 but cannot take WYO 130 which is closed in the winter.
Interstate 80 Business may refer to several business routes of the Interstate Highway System that connects Interstate 80 with the central business district of various cities bypassed by I-80. The business route in each community is considered a unique route. In many cases, these routes are a former section of a U.S. Route or state highway.
Wyoming Highway 89 (WYO 89) is a north-south state road that jumps in and out of Wyoming three times, and runs through the western edges of and Uinta County, Wyoming and Lincoln County, Wyoming.
Wyoming Highway 320 (WYO 320) is a 12.33-mile-long (19.84 km) north–south state highway in central Platte County, Wyoming that connects Interstate 25 Business and U.S. Route 87 Business in Wheatland to US 26 in Dwyer, and was once part of the Yellowstone Highway.
Wyoming Highway 76 (WYO 76) is a state highway in Carbon County, Wyoming, United States, that connects the settlements of Rawlins to Sinclair. It follows the former route of U.S. Route 30 (US 30) and parallels Interstate 80 (I-80), the main east–west freeway in the state. The highway was designated in the 1960s after the freeway was completed and transferred to local control, but later reverted to state maintenance.
Interstate business routes are roads connecting a central or commercial district of a city or town with an Interstate bypass. These roads typically follow along local streets often along a former US or state highway that had been replaced by an Interstate. Interstate business route reassurance markers are signed as either loops or spurs using a green shield shaped sign and numbered like the shield of the parent Interstate Highway.
US 30 at the Idaho state line near Kemmerer 
