Interstate 190 (South Dakota)
Highway in South Dakota
From Wikipedia, the free encyclopedia
Interstate 190 (I-190) is an auxiliary Interstate Highway in the US state of South Dakota. The route runs for about two miles (3.2 km) connecting I-90 to downtown Rapid City. The entire route is concurrent with US Highway 16 (US 16).
Interstate 190 | ||||
|---|---|---|---|---|
 I-190 highlighted in red | ||||
| Route information | ||||
| Auxiliary route of I-90 | ||||
| Maintained by SDDOT | ||||
| Length | 1.72 mi[1] (2.77 km) | |||
| Existed | 1958[2]–present | |||
| History | Completed in 1962[citation needed] | |||
| NHS | Entire route | |||
| Major junctions | ||||
| South end |     I-90 BL / US 16 / SD 44 / SD 79 in Rapid City | |||
| North end |   I-90 / US 14 / US 16 / SD 79 in Rapid City | |||
| Location | ||||
| Country | United States | |||
| State | South Dakota | |||
| Counties | Pennington | |||
| Highway system | ||||
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Route description
I-190 begins as West Boulevard and has an intersection with Omaha Street, which is signed as US 16/South Dakota Highway 44 (SD 44). US 16 westbound goes east on Omaha Street and eastbound runs north concurrently with I-190. I-190 then becomes a freeway, with an exit to North Street. I-190 then passes under Anamosa Street before an onramp from the northbound lanes of West Boulevard. Both US 16 and I-190 then terminate at a trumpet interchange with I-90/US 14/SD 79.[3]
State law
Legally, the route of I-190 is defined at South Dakota Codified Laws § 31-4-203.[4]
History
A freeway replacing West Bypass to connect downtown Rapid City to I-90 was proposed by the city government.[5] The designation of I-190 for this connector was approved by the American Association of State Highway Officials in November 1958.[2]
I-190 was opened in 1962 to connect Rapid City to the recently completed I-90 bypass, which was built outside of Rapid City's northern boundaries.[6]
The interchange with I-90 was rebuilt from 2000 to 2001, changing from a directional T interchange with a left exit to a trumpet interchange.[7][8][9] The Omaha Street intersection was rebuilt in 2004,[10] while the North Street interchange was converted to a single-point urban interchange in 2017.[11]
Exit list
The entire route is in Rapid City, Pennington County.
| mi[12] | km | Exit | Destinations | Notes | ||
|---|---|---|---|---|---|---|
| 0.00 | 0.00 |  West Boulevard to I-90 BL US 16 west / SD 44 (Omaha Street) – Mount Rushmore | Stoplight intersection; southern terminus of I-190; roadway continues as West Boulevard; southern end of US 16 concurrency | |||
| 0.38 | 0.61 | 1C | North Street – Civic Center | |||
| 1.46 | 2.35 | 1A–1B |  I-90 / US 16 ends / US 14 / SD 79 – Gillette, Sioux Falls | Trumpet interchange; I-190 northern terminus; US 16 eastern terminus; northern end of US 16 concurrency; signed as left exit 1A (west) and 1B (east); I-90 exit 57 | ||
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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