U.S. Route 91 or U.S. Highway 91 (US-91) is a 172.663-mile-long (277.874 km) north–south United States highway running from Brigham City, Utah, to Idaho Falls, Idaho, in the U.S. states of Idaho and Utah. Despite the "1" as the last digit in the number, US-91 is no longer a cross-country artery, as it has mostly been replaced by Interstate 15. The highway currently serves to connect the communities of the Cache Valley to I-15 and beyond. Prior to the mid-1970s, US 91 was an international commerce route from Long Beach, California, to the Canada–US border north of Sweetgrass, Montana. US 91 was routed on the main streets of most of the communities it served, including Las Vegas Boulevard in Las Vegas and State Street in Salt Lake City. From Los Angeles to Salt Lake, the route was built along the corridor of the Arrowhead Trail. A portion of the highway's former route in California is currently State Route 91.
U.S. Route 258 is a spur of US 58 in the U.S. states of North Carolina and Virginia. The U.S. Highway runs 220.15 miles (354.30 km) from US 17 Business and NC 24 Business in Jacksonville, North Carolina north to Virginia State Route 143 at Fort Monroe in Hampton, Virginia. In North Carolina, US 258 connects Jacksonville with the Inner Banks communities of Kinston, Snow Hill, Farmville, Tarboro, and Murfreesboro. The U.S. Highway continues through the Virginia city of Franklin, where the highway intersects US 58, and the town of Smithfield on its way to the Hampton Roads metropolitan area. US 258 crosses the James River on the James River Bridge and follows Mercury Boulevard through Newport News and Hampton.
State Route 68 (SR-68) is a state highway in the U.S. state of Utah. It is a major thoroughfare throughout the Wasatch Front as it runs north–south for 70.8 miles (113.9 km), linking US-6 near Elberta to US-89 in Woods Cross. The route intersects several major freeways and highways in the Salt Lake City metropolitan area including I-215, I-80, and I-15. The route is more commonly referred to as Redwood Road, after the street it is routed along throughout Salt Lake County. The highway is also routed for a short distance along 500 South and 200 West in Bountiful and Camp Williams Road in Utah County. The route is a surface street for its entire length.
State Route 106 (SR-106) is a state highway in the U.S. state of Utah, running northerly from Bountiful to Farmington. Most of the road is the old route of US-89/US-91, and once extended further along that old alignment in each direction.
State Route 271 (SR-271) is a state highway within Iron County in the southwestern portion of the US state of Utah that connects Parowan and SR-274 to Paragonah and I-15. The route spans 5.65 miles (9.09 km) south–north and roughly parallels I-15. State Route 271 was designated in 1978.
State Route 51 (SR-51) is a short 3.339-mile-long (5.374 km) state highway completely within Utah County in northern Utah. SR-51 connects SR-147 to U.S. Route 89 (US-89). The highway is an old routing of US-91.
State Route 120 (SR-120) is a state highway in the US state of Utah forming a business loop around I-70 serving the town of Richfield. The route forms the main street for Richfield and spans 3.89 miles (6.26 km). The highway was established 1969, coinciding with the construction of I-70 through Sevier County.
State Route 258 is a highway within Sevier County in central Utah connecting Interstate 70 to SR-118 and serving as the community of Elsinore's Main Street. It is two miles (3 km) long.
State Route 259 (SH-259) is a short state highway within Sigurd in Sevier County, Utah connecting Interstate 70 (I-70)/U.S. Route 89 (US-89) to SR-24.
State Route 260 is a highway within Sevier County in central Utah that connects SR-24 to US-50 while passing through the town of Aurora in a span of four miles (6 km).
U.S. Route 89 in the U.S. state of Utah is a north-south United States Highway spanning more than 502 miles (807.891 km) through the central part of the state, making it the longest road in Utah. Between Provo and Brigham City, US-89 serves as a local road, paralleling Interstate 15, but the portions from Arizona north to Provo and Brigham City northeast to Wyoming serve separate corridors. The former provides access to several national parks and Arizona, and the latter connects I-15 with Logan, the state's only Metropolitan Statistical Area not on the Interstate.
State Route 48 (SR-48) is a highway completely within Salt Lake County in northern Utah that connects Bangerter Highway with I-15 and US-89. The route is laid on portions of 7800 South, Redwood Road, and 7200 South. When the route was formed in 1927, it passed through the center of Midvale on Center Street. However, it was moved north onto 7200 South in 1965 to serve an exit of I-15.
State Route 273 (SR-273) is a state highway completely within Davis County in the northern portion of the U.S. state of Utah that connects Farmington and US-89 to Kaysville and I-15.
State Route 39 (SR-39) is a state highway in northern Utah connecting Ogden to Woodruff via Ogden Canyon and Huntsville. The highway is on 12th Street in Ogden and the Ogden River Scenic Byway through Ogden Canyon. The route is over sixty-seven miles long.
State Route 193 is an east and west highway located completely in Davis County, Utah, United States that begins at 3000 West, runs past the south entrance of Hill Air Force Base and ends at US-89.
State Route 119 (SR-119) is a 8.753-mile-long (14.087 km) state highway in the U.S. state of Utah, connecting SR-119 in Richfield to SR-24 near Glenwood.
Twenty-four business routes of Interstate 15 (I-15) exist. Former routes also exist.
State Route 24 (SR-24) is a state highway in south central Utah which runs south from Salina through Sevier County then east through Wayne County and north east through Emery County. At a total of 163.294 miles, it is the longest contiguous state route in Utah. A portion of the highway has been designated the Capitol Reef Scenic Byway as part of the Utah Scenic Byways program.
State Route 116 (SR-116) is a 7.061-mile (11.364 km) long state highway in the U.S. state of Utah. Located entirely within Sanpete County, the route runs from SR-132 in Moroni to U.S. Route 89 in Mount Pleasant.
State Route 135 (SR-135) is a short divided state highway in northern Utah County, Utah, United States. The route spans east–west for 0.726 miles (1.168 km) to connect the far northeastern part of Lindon and Interstate 15 (I-15) with SR-129 in the southeastern part of Pleasant Grove. The majority of the route runs along Pleasant Grove Boulevard.
I-70 / US 89 in Joseph 
SR-258 near Elsinore 
SR-120 / I-70 BL in Richfield 
SR-119 near Richfield
SR-24 in Sigurd 
