U.S. Route 16 | |||||||
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US 16 highlighted in red |
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Route information | |||||||
Length: | 540 mi[1] (869 km) | ||||||
Existed: | 1926[1] – present | ||||||
Major junctions | |||||||
West end: | US 14 / US 20 at Yellowstone National Park entrance | ||||||
I-25 / US 87 in Buffalo, WY |
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East end: | I-90 / I-190 / US 14 in Rapid City, SD | ||||||
Highway system | |||||||
United States Numbered Highways
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U.S. Route 16 (US 16) is an east–west United States Highway between Rapid City, South Dakota and Yellowstone National Park in Wyoming.
As of 2004, the highway's eastern terminus is at a junction with Interstate 90/U.S. Route 14 (I-90/US 14), concurrent with I-190, in Rapid City, South Dakota. The western terminus is the east entrance to Yellowstone National Park, concurrent with US 14 and US 20.
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US 16 in Wyoming crosses through the towns of Newcastle and Upton before joining I-90 near Moorcraft. It runs concurrently with I-90 to Gillette, where it splits off north and then arcs back down to the town of Buffalo. From Buffalo it goes over the Powder River Pass on its way to Worland. In Worland, it turns north and overlaps US 20 through the towns of Basin and Greybull. In Greybull, the two routes combine with US 14 and go west to Cody and into Yellowstone National Park. For most of the way it is a two-lane road.
US 16 is also known as Mount Rushmore Road in western South Dakota. The highway enters South Dakota east of Newcastle, Wyoming. It travels near Jewel Cave, the second-longest cave in the world.[2] The highway goes through the city of Custer and shares alignment with US 385. East of Hill City, US 16 splits off US 385. It then becomes a four-lane divided highway, with the two roadways separated by up to a half-mile (0.8 km) in some places, including the old gold-mining town of Rockerville, South Dakota, which is contained entirely between the two roadways. In Rapid City, a newly complete truck bypass runs along Catron Boulevard and Elk Vale Road up to Exit 61 on I-90.
The South Dakota section of US 16 is defined at South Dakota Codified Laws § 31-4-138.[3]
US 16 originally connected Detroit with Yellowstone, including a ferry link across Lake Michigan between Muskegon, Michigan, and Milwaukee, Wisconsin. 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 US Routes in 1926, had been designated as M-16 in the 1920s from Detroit to south of Muskegon. In 1938, reflectorized discs were placed on US-16 every 100 feet (30 m) from Detroit to Lansing, resulting in fewer nighttime traffic accidents. Other states would later do the same on their roads.
US 16 initially crossed the South Dakota – Wyoming state line west of Spearfish. U.S. Route 216 was commissioned in 1930 as a loop off US 16 to the south between Rapid City and Moorcroft, crossing the state line west of Custer. In 1934, US 16 was moved to the US 216 alignment, while the former US 16 became part of an extension of US 14.
In Michigan, most of US 16 was superseded by I-96 and a segment of Grand River Avenue in Detroit ultimately became M-5. US 16 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. East of there it is now Minnesota State Highway 16 and Wisconsin Highway 16. In South Dakota it was replaced by various state highways (including SD Highway 38) 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 Alternate US 16 in South Dakota has become South Dakota State Highway 240.
Mileage resets at the state line crossing
County | Location | Mile[4][5][6] | Destinations | Notes | |||
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Yellowstone National Park | 0.00 | US 14 / US 20 | West end of US 14 / 20 overlap | ||||
Park |
Cody | 49.87 | WYO 291 | ||||
52.36 | US 14 Alt. east, WYO 120 north |
West end of WYO 120 overlap | |||||
54.58 | WYO 120 | East end of WYO 120 overlap | |||||
Big Horn |
85.66 | WYO 30 | |||||
86.26 | WYO 32 | ||||||
100.75 | US 310 / WYO 789 north | North end of WYO 789 overlap | |||||
Greybull | 204.05 | US 14 | East end of US 14 overlap | ||||
199.27 | WYO 36 (Golf Course Road) | ||||||
Basin | 196.42 | WYO 30 | |||||
185.52 | WYO 433 | ||||||
Manderson | 184.35 | WYO 31 | |||||
Washakie |
Worland | 0.00 | US 20 / WYO 789 west, WYO 432 south | East end of US 20 overlap, south end of WYO 789 overlap | |||
Ten Sleep | 26.42 | WYO 434 | |||||
30.04 | WYO 436 | ||||||
33.90 | WYO 435 | ||||||
Johnson |
Buffalo | 92.12 | I-25 Bus. / US 87 Bus. / WYO 196 (Main Street) |
South end of WYO 196 overlap | |||
100.00 | I-25 Bus. / US 87 Bus. / WYO 196 (Main Street) |
North end of WYO 196 overlap | |||||
100.61 | I-25 / US 87 | Interchange | |||||
2.12 | I-90 | Interchange | |||||
Sheridan |
Ucross | 17.64 | US 14 | West end of US 14 overlap | |||
54.72 | WYO 341 | ||||||
Campbell |
102.07 | WYO 59 | North end of WYO 59 overlap | ||||
Gillette | 114.86 | WYO 50 (Skyline Drive) | |||||
113.10 | WYO 59 (Douglas Highway) | South end of WYO 59 overlap | |||||
127.57 | I-90, WYO 51 ahead | West end of I-90 overlap | |||||
Crook |
Moorcroft | 153.41 | I-90 | East end of I-90 overlap | |||
153.56 | WYO 51 | ||||||
200.00 | US 14 | East end of US 14 overlap | |||||
Weston |
Upton | 219.83 | WYO 116 | West end of WYO 116 overlap | |||
220.13 | WYO 116 | East end of WYO 116 overlap | |||||
Osage | 233.29 | WYO 451 | |||||
245.67 | WYO 450 | ||||||
Newcastle | 247.34 | US 16 Bus. |
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248.99 | US 16 Bus. |
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249.82 | US 85 | ||||||
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259.08 0.00 |
Wyoming – South Dakota state line | |||||
Custer |
Custer | 26.46 | US 385 / SD 89 | South end of US 385 overlap West end of SD 89 overlap |
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26.96 | US 16A / SD 89 | East end of SD 89 overlap | |||||
Pennington |
37.49 | SD 87 (Needles Highway) | |||||
37.69 | SD 244 | ||||||
Hill City | 40.51 | US 16 Truck / US 385 Truck |
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41.06 | US 16 Truck / US 385 Truck |
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45.00 | US 385 | North end of US 385 overlap | |||||
50.60 | US 16A | ||||||
Rapid City | 64.19 | US 16 Truck |
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69.00 | SD 44 (Omaha Street) | East end of SD 44 overlap | |||||
69.20 | I-190 SD 44 (Omaha Street) west |
South end of I-190 overlap West end of SD 44 overlap |
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I-190: 1.46 | I-90 | North end of I-190 overlap | |||||
1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus • Closed/Former • Incomplete access • Unopened |
Main U.S. Routes |
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1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | |
20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | |
40 | 41 | 42 | 43 | 44 | 45 | 46 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | |
60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 |
80 | 81 | 82 | 83 | 84 | 85 | 87 | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | ||
101 | 163 | 400 | 412 | 425 | |||||||||||||||
Lists | U.S. Routes • Bannered • Divided • Bypassed |