Interstate 190 South Dakota
Interstate 190 is a short spur from Interstate 90 south into Downtown Rapid City. It runs concurrent with U.S. 16 as part of a route to Black Hills National Forest and Mount Rushmore National Monument.
A single point urban interchange (SPUI) was constructed along Interstate 190 at Silver and North Streets from September 2015 to October 2017. Construction included the replacement of the I-190 overpasses above North Street and the removal of the frontage roads south of there. Work also added a bike path along the west side of I-190 to the north.
Interstate 190 opened in 1962.2 The bridges over North Street were built in 1958.1 The exchange joining the north end of I-190 with I-90 was reconfigured from a directional T interchange with left ramps into a trumpet interchange in 2000.
The Omaha Street Project, underway during the 2003 and 2004 construction seasons, rebuilt the intersection where I-190 & U.S. 16 ties into Omaha Street (SD 44) and West Boulevard. The public private partnership expanded Omaha Street into a six lane arterial from 12th Street to East Boulevard, with work completed just ahead of schedule on July 3, 2004.3
Construction on the I-190/Silver Street Interchange Project commenced in August 2015 with land clearing. Closure of the southbound lanes of I-190 followed by March 2016 so crews could rebuild them and replace the span above North Street. Phase III reopened the southbound lanes for two-way traffic in October 2016 as the northbound lanes were rebuilt. Phase IV involved paving of Nickel Street (formerly West Boulevard).1
NB I190 on ramp @ Anamosa St. will be closed permanently & traffic will be switched head to head in the NB Lanes beginning Monday March 7.
— SDi190info (@SDi190info) March 3, 2016
A ribbon cutting ceremony took place on August 15, 2017 and the exchange officially opened to traffic on August 18.4 Total costs were estimated at $32.5 million for SDDOT and $1.7 million for the city of Rapid City. Final projects items for the I-190/Silver Street Interchange Project wrapped up in October 2017.1,4
North End – Rapid City, SD
South End – Rapid City, SD
Mileage – 1.72
Cities – Rapid City
- Junctions –
Source: December 31, 2017 Interstate Route Log and Finders List
I-190 Annual Average Daily Traffic (AADT)
|Location||Vehicles per day|
|SD 44 to North St||17,340|
|North St to I-90||18,866|
Source: 2016 South Dakota Traffic Flow Map, South Dakota Department of Transportation (SDDOT).
North End – Rapid City, South Dakota
South End – Rapid City, South Dakota
- I-190/Silver Street Interchange Project. June 2016 Newsletter.
- The South Dakota Highways Page: Highways 101 to 200.
- “Omaha Street to Open Ahead of Schedule.” South Dakota DOT, press release. July 1, 2004.
- I-190/Silver Street Interchange Project Newsletter. September 2017.
Page updated January 11, 2018.