U.S. Route 16
In-game article clicks load inline without leaving the challenge.
U.S. Highway16 (US16) is an east–west United States Numbered Highway between Rapid City, South Dakota, and Yellowstone National Park in Wyoming. The highway's eastern terminus is at a junction with Interstate90 (I-90)/US14, concurrent with I-190, in Rapid City. The western terminus is the east entrance to Yellowstone National Park, concurrent with US14 and US20. US16 used to extend all the way to Michigan but has been truncated in favor of I-90 and I-96.
Route description
Wyoming
US16 begins at the east entrance to Yellowstone National Park, along with US14 and the eastern segment of US20. From the park, the three highways run concurrently to Cody and Greybull. In Greybull, US14 splits off to the east, while US16/US20 heads due south to Basin and Worland. In Worland, US16 splits off from US20 and heads east over Powder River Pass on its way to the city of Buffalo. After passing Buffalo, US16 arches north to the community of Ucross, meeting US14 again, before arching back south to Gillette. US16 then runs east concurrently with I-90 between Gillette and Moorcroft before heading southeast to the towns of Upton and Newcastle. The highway then heads east to the South Dakota state line. For most of the way through the state, the highway is a two-lane road. US16 is 419 miles (674km) long in Wyoming.
South Dakota
US16 is also known as Mount Rushmore Road in western South Dakota. From the state line, the highway travels near Jewel Cave, the fifth longest cave in the world. The highway goes through the city of Custer and shares alignment with US385. East of Hill City, US16 splits off US385. It then becomes a four-lane divided highway, with the two roadways separated by up to a half-mile (0.80km) in some places, including the old gold-mining town of Rockerville, which is contained entirely between the two roadways. In Rapid City, a truck bypass runs along Catron Boulevard and Elk Vale Road up to exit61 on I-90. US16 is 71 miles (114km) long in South Dakota.
The South Dakota section of US16 is defined at South Dakota Codified Laws § 31-4-138.
History

US16 originally connected Detroit with Yellowstone National Park, including a ferry link across Lake Michigan between Muskegon, Michigan, and Milwaukee, Wisconsin aboard SS Milwaukee Clipper. In Michigan, the route was in use long before automobiles and was known to white settlers as the Grand River Road, and prior to the designation of U.S. Highways in 1926, had been designated as M-16 in the 1920s from Detroit to south of Muskegon. In 1938, reflectorized discs were placed on US16 every 100 feet (30m) from Detroit to Lansing, resulting in fewer nighttime traffic accidents. Other states would later do the same on their roads.
US16 initially crossed the South Dakota–Wyoming state line west of Spearfish. U.S. Highway216 (US216) was commissioned in 1930 as a loop off US16 to the south between Rapid City and Moorcroft, crossing the state line west of Custer. In 1934, US16 was moved to the US216 alignment, while the former US16 became part of an extension of US14.
In Michigan, most of US16 was superseded by I-96 and a segment of Grand River Avenue in Detroit ultimately became M-5. US16 was later decommissioned in Wisconsin, Minnesota, and eastern South Dakota to its present termini.
Between Rapid City and Dexter, Minnesota, it has been supplanted by I-90. In Faribault County, Minnesota, the highway took on another number as there was already a county highway numbered 16. Residents of the county continued referring to the road as "16" or "old 16" and eventually the county renumbered it as County Road16 (CR16). From the county's western border with Martin County, US16 continued east through the city of Blue Earth as part of 1st Street and Leland Parkway until it briefly combines with US169/Grove Street. One-half mile (0.80km) south of that point at the intersection of Grove and 7th streets, CR16 followed 7th Street and continued east to the border of Freeborn County. Most of the stretch through Faribault County was a relatively narrow two-lane highway with wide gravel shoulders that has been widened at least two times since US16 was decommissioned. East of Dexter, it is now Minnesota State Highway 16 and State Trunk Highway16 in Wisconsin. In South Dakota, it was replaced by various state highways (including South Dakota Highway 38, or SD38, and SD248) and county roads: generally, in West River, the old alignment was transferred to county responsibility entirely, while, in East River, it remained a state-maintained highway.
An older US16A in South Dakota has become SD240.
In South Dakota in 2009, the South Dakota Department of Transportation designated US16/US385 between Custer and Hill City, which passes by the Crazy Horse Memorial, now being carved in the Black Hills, as the Crazy Horse Memorial Highway. This segment of US385 is also a part of the George Hearst Memorial Highway.
Major intersections
Mileage resets at the state line crossing.
| State | County | Location | mi | km | Exit | Destinations | Notes |
|---|---|---|---|---|---|---|---|
| Wyoming | Park | Yellowstone National Park | 0.000 | 0.000 | East Entrance Road (to US20 west) | Continuation into Yellowstone National Park; US20 resumes in Montana at the park's west entrance (closed winters) | |
| Yellowstone National Park boundary (East Entrance); fees required | |||||||
| US14 begins/ US20 begins/ Buffalo Bill Cody Scenic Byway begins | US14/ US16 western terminus; western end of US14/ US20/ Buffalo Bill Cody Scenic Byway concurrency | ||||||
| Pahaska Tepee | 2.000 | 3.219 | Westbound road closure gate (closed winters) | ||||
| Cody | 49.410 | 79.518 | WYO291 south (South Fork Road) | ||||
| 50.900 | 81.916 | US14A east/ WYO120 west (16th Street)/ Buffalo Bill Cody Scenic Byway ends– Powell, Big Horn Natl Rec Area | West end of WYO120 and Buffalo Bill Cody Scenic Byway concurrency | ||||
| 54.119 | 87.096 | WYO120 south– Meeteetse, Thermopolis | East end of WYO120 concurrency | ||||
| Big Horn | | 85.065 | 136.899 | WYO30 south– Burlington | |||
| Emblem | 85.665 | 137.864 | WYO32 north– Powell, Lovell | ||||
| | 99.197 | 159.642 | US310 west/ WYO789 north– Lovell, Billings, Bighorn Canyon Natl Recreation Area | West end of WYO789 concurrency; US310 eastern terminus | |||
| 101.530 | 163.397 | Airport Rest Area | |||||
| Greybull | 104.176 | 167.655 | US14 east (Greybull Avenue)– Shell, Sheridan | East end of US14 concurrency | |||
| | 108.960 | 175.354 | WYO36 south (Golf Course Road) | ||||
| Basin | 111.815 | 179.949 | WYO30 south (C Street)– Burlington | ||||
| | 122.265 | 196.766 | WYO433 south | ||||
| Manderson | 122.832 | 197.679 | WYO31 Spur east– Manderson, Hyattville | Officially WYO31 Spur; signed as WYO31 | |||
| 123.436 | 198.651 | WYO31 east | Unsigned | ||||
| Washakie | Worland | 142.079 | 228.654 | US20 west/ WYO789 south (Big Horn Avenue)– Thermopolis, Hot Springs State Park | East end of US20/ WYO789 concurrency | ||
| Ten Sleep | 168.500 | 271.174 | WYO434 south– Big Trails | ||||
| | 172.117 | 276.995 | WYO436 south | ||||
| 175.978 | 283.209 | WYO435 east | |||||
| 176.079 | 283.372 | Eastbound road closure gate (weather depending) | |||||
| 191.489 | 308.172 | Eastbound road closure gate (weather depending) | |||||
| Johnson | | 197.500 | 317.845 | Powder River Pass | |||
| 205.566 | 330.826 | Westbound road closure gate (weather depending) | |||||
| 230.069 | 370.260 | Westbound road closure gate (weather depending) | |||||
| Buffalo | 233.988 | 376.567 | I-25 BL south/ US87 Bus. south (Main Street)– Casper | South end of I-25 BL/ US87 Bus. concurrency | |||
| 234.395 | 377.222 | I-25 BL north/ I-90 BL west (Main Street)/ US87 Bus. north | North end of I-25 BL/ US87 Bus. concurrency; south end of I-90 BL concurrency | ||||
| 234.990 | 378.180 | I-25/ US87– Sheridan, Casper | I-25 exit 299 | ||||
| | 236.517 | 380.637 | I-90/ I-90 BL ends– Sheridan, Gillette | I-90 exit 58; east end I-90 BL concurrency | |||
| 236.695 | 380.924 | Eastbound road closure gate (weather depending) | |||||
| Sheridan | Ucross | 252.255 | 405.965 | US14 west– Sheridan | West end of US14 concurrency | ||
| | 279.196 | 449.322 | WYO341 south– Arvada | ||||
| Campbell | | 319.685 | 514.483 | Eastbound road closure gate (weather depending) | |||
| 322.648 | 519.252 | WYO59 north– Broadus | West end of WYO59 concurrency | ||||
| Gillette | 329.930 | 530.971 | WYO50 south/ I-90 BL west (Skyline Drive) to I-90– Buffalo, Moorcroft | West end of BL90 concurrency | |||
| 331.731 | 533.869 | WYO59 south to I-90– Douglas | East end of WYO59 concurrency | ||||
| 333.053 | 535.997 | 128 | I-90 west/ I-90 BL ends/ WYO51 east– Buffalo | East end of BL90 concurrency; west end of I-90 concurrency; exit numbers follow I-90 | |||
| 334.586 | 538.464 | 129 | Garner Lake Road | ||||
| | 338.473 | 544.719 | 132 | Wyodak Road | |||
| | 346.806 | 558.130 | 141 | Rozet | |||
| Crook | Moorcroft | 358.981 | 577.724 | 153 | I-90 east/ I-90 BL begins– Sundance | East end of I-90 concurrency; west end of BL90 concurrency | |
| 359.118 | 577.944 | WYO51 west | |||||
| 360.186 | 579.663 | US14 east– Devils Tower, Hulett, Pine Haven | East end of US14 concurrency | ||||
| 360.384 | 579.982 | I-90 BL east to I-90 | East end of BL90 concurrency | ||||
| | 360.686 | 580.468 | Eastbound road closure gate (weather depending) | ||||
| Weston | Upton | 380.013 | 611.572 | WYO116 north– Sundance | West end of WYO116 concurrency | ||
| 380.317 | 612.061 | WYO116 south | East end of WYO116 concurrency | ||||
| | 380.986 | 613.138 | Upton Rest Area | ||||
| Osage | 393.479 | 633.243 | WYO451 west (Oil City Road) | ||||
| | 405.786 | 653.049 | Westbound road closure gate (weather depending) | ||||
| 405.452 | 652.512 | WYO450 west | |||||
| Newcastle | 407.127 | 655.207 | US16 Byp. east | ||||
| 408.955 | 658.149 | US16 Byp. west | |||||
| 409.606 | 659.197 | US85– Sundance, Lusk | |||||
| | 413.790 | 665.930 | Eastbound road closure gate (weather depending) | ||||
| 418.8740.00 | 674.1120.00 | Wyoming–South Dakota state line | |||||
| South Dakota | Custer | Custer | 26.46 | 42.58 | US385 south/ SD 89 south– Wind Cave National Park, Hot Springs | West end of US385/ SD89 concurrency | |
| 26.96 | 43.39 | US16A east/ SD 89 north– Custer State Park | East end of SD89 concurrency | ||||
| Pennington | | 37.49 | 60.33 | SD 87 south (Needles Highway)/ Peter Norbeck Scenic Byway– Sylvan Lake, Custer | |||
| 37.69 | 60.66 | SD 244 east/ Peter Norbeck Scenic Byway– Mount Rushmore | |||||
| Hill City | 40.51 | 65.19 | US16 Truck east/ US385 Truck north | ||||
| 41.06 | 66.08 | US16 Truck west/ US385 Truck south | |||||
| Three Forks | 45.00 | 72.42 | US385 north– Deadwood, Lead | East end of US385 concurrency | |||
| Keystone Wye | 50.60 | 81.43 | US16A west– Keystone, Mount Rushmore | Directional-T interchange | |||
| | 55.42– 56.19 | 89.19– 90.43 | Rockerville | Interchange; left exits and entrances | |||
| Rapid City | 64.19 | 103.30 | US16 Truck east to I-90/ Catron Boulevard | Future single-point urban interchange (SPUI) | |||
| 68.77– 68.85 | 110.67– 110.80 | I-90 BL (St. Joseph Street/ Main Street) | One way pair | ||||
| 68.98 | 111.01 | SD 44 east (Omaha Street) | West end of SD44 concurrency | ||||
| 69.20 | 111.37 | SD 44 east (Omaha Street) I-190 begins/ West Boulevard | East end of SD44 concurrency; west end of I-190 concurrency; I-190 southern terminus; exit numbers follow I-190 | ||||
| 69.57 | 111.96 | 1C | North Street– Civic Center | ||||
| 70.64 | 113.68 | 1A–1B | I-90/ I-190 ends/ US14/ SD 79– Gillette, Sioux Falls | Trumpet interchange; US16 eastern terminus; I-190 northern terminus; east end of I-190 concurrency; signed as exits 1A (west) and 1B (east); I-90 exit57 | |||
| 1.000mi = 1.609km; 1.000km = 0.621mi Concurrency terminusTolledRoute transition |
See also
Related routes
Special and suffixed routes
Notes
External links
- December 30, 2014, at theWayback Machine