Interstate 190 South Dakota

Overview

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.

History

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 tie 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

Route Information

North End – Rapid City, SD
South End – Rapid City, SD
Mileage – 1.72
Cities – Rapid City
Junctions –

Source: December 31, 2021 Interstate Route Log and Finders List

I-190 Annual Average Daily Traffic (AADT)

Location	Vehicles per day
SD 44 to North St	18,670
North St to I-90	19,020

Source: 2019 South Dakota Traffic Flow Map, South Dakota Department of Transportation (SDDOT).

North Street east at the single point urban interchange (SPUI) with Interstate 190 and U.S. 16. Photo by Joseph Barnes (12/13/17).

Photo Guides

Interstate 190 South Dakota

North End – Rapid City, South Dakota

North East at

A second set of confirming markers for I-190/U.S. 16 precede the Anamosa Street overpass northbound. Photo by Joseph Barnes (12/13/17).

Interstate 190 and U.S. 16 conclude at a trumpet interchange (Exits 1A/B) just north of the Anamosa Street entrance ramp from West Boulevard. 08/12/13

Single lane ramps partition for I-90/U.S. 14 and SD 79 east to Wall and west to Sturgis, Spearfish and Sundance, Wyoming. 08/12/13

East at

I-90/U.S. 14 east / SD 79 south traverse the hills separating industrial west Rapid City from the residential street grid on the one mile approach to I-190 south / U.S. 16 west. Mount Rushmore is the I-190 control point, as the freeway represents the initial leg of the route along U.S. 16 southwest to Rockerville and the national monument. 08/20/14

Exit 57 departs Interstate 90 east for I-190 south to Downtown. U.S. 16 and U.S. 16 Truck begin here as well. The mainline of U.S. 16 bisects Rapid City southward, while the truck route combines with SD 79 around eastern reaches of the city from Exit 61. 08/20/14

West at

I-90 travels between retail areas on the 1.75 mile approach to Interstate 190 and U.S. 16. Traffic counts recorded by SDDOT in 2019 increased from 33,340 vehicles per day here to 37,180 vpd ahead of I-190. This sign was replaced in 2019 with Civic Center added and B.H. National Forest dropped. Photo by Joseph Barnes (12/13/17).

Passing through the diamond interchange (Exit 59) with Lacrosse Street on I-90, U.S. 14 and SD 79 west. Black Hills National Forest is a control point for Interstate 190 south / U.S. 16 west in the westbound direction of I-90 only. Photo by Joseph Barnes (12/13/17).

An auxiliary lane accompanies I-90/U.S. 14 west and SD 79 north from the adjacent SPUI with Haines Avenue to Exit 57 with I-190 south / U.S. 16 west. Photo by Joseph Barnes (12/13/17).

Exit 57 loops away from I-90/U.S. 14-SD 79 west for Interstate 190 south and the eastbound beginning of U.S. 16 to Downtown Rapid City. Photo by Joseph Barnes (12/13/17).

South West

I-190 south / U.S. 16 west lower toward the Anamosa Street overpass and Exit 1C. Nickel Street (formerly West Boulevard) forms a west side frontage road to Silver Street. Photo by Joseph Barnes (12/13/17).

Previously missing, the lone southbound shield for Interstate 190 was restored during the I-190/Silver Street Interchange Project. Photo by Joseph Barnes (12/13/17).

North End Throwback

A directional T interchange originally joined I-90 and I-190. The exchange was reconfigured into a trumpet to eliminate left exit ramps along I-90 westbound. Photo by Jay Maynard (07/05/02).

Sign changes made by 2007 for Exit 57 added a greenout for Downtown, reflecting the completion of the U.S. 16 Truck bypass encircling southeast Rapid City. Photo by Jay Maynard (07/05/02).

South End – Rapid City, South Dakota

South West at

Continuing south from Anamosa Street, I-190/U.S. 16 meet SD 44 (Omaha Street) and West Boulevard in 0.75 miles. Photo by Joseph Barnes (12/13/17).

Exit 1C departs I-190 south / U.S. 16 west for North Street and Rushmore Plaza City Center. Photo by Joseph Barnes (12/13/17).

Interstate 190 spans Rapid Creek just ahead of the signalized intersection with SD 44 (Omaha Street) and West Boulevard. U.S. 16 turns east along side Omaha Street for one block to Rushmore Road through Downtown Rapid City. Photo by Joseph Barnes (12/13/17).

East West at

U.S. 16 dog legs along Omaha Street (SD 44) west from Mount Rushmore Road to Interstate 190. Photo by Joseph Barnes (12/13/17).

Overheads omit U.S. 16 east on SD 44 (Omaha Street) as the six lane arterial intersects West Boulevard south and I-190 north. SD 44 constitutes a truck route bypass of Downtown Rapid City. 08/12/16

U.S. 16 east turns north onto the freeway beginning of Interstate 190 to end at I-90. The US highway formerly combined with Business Loop I-90 east from Downtown Rapid City to I-90 at Exit 60. Photo by Joseph Barnes (12/13/17).

North East

Interstate 190 and U.S. 16 combine at Omaha Street and immediately cross Rapid Creek between Memorial Park and Executive Golf Course. Photo by Joseph Barnes (12/13/17).

Completed in August 2017, a SPUI (Exit 1C) joins I-190 north / U.S. 16 east with North Street to Rushmore Plaza Civic Center. Photo by Joseph Barnes (12/13/17).

The I-190/Silver Street Interchange Project included the addition of confirming markers for I-190 and U.S. 16 at the North Street underpass. Photo by Joseph Barnes (12/13/17).

South End Throwback

South West at

A new sign bridge replaced this assembly at the south end of I-190 when SD 79 was realigned in 2005. The state highway formerly followed a route across the city via Sturgis Road, and Chicago, Omaha and St. Joseph Streets. Photo by Jay Maynard (07/06/02).

East South at

Approaching Interstate 190 and U.S. 16 along SD 44 east / SD 79 south, prior to the 2003-04 expansion of Omaha Street to six lanes. Photo by Jay Maynard (07/06/02).

Omaha Street east at West Boulevard and the Interstate 190 freeway. SD 79 formerly continued east with U.S. 16 west from here to Business Loop I-90 in Downtown. Expansion of Omaha Street here removed these shields, and as of 2015 they were not replaced. Photo by Jay Maynard (07/06/02).

A second set of signs were posted on the northeast corner of Omaha Street at I-190 and West Boulevard. These were replaced during the Omaha Street Project to no longer reference U.S. 16 east. The assembly with SD 79 was replaced by 2003 with a new sign bridge for the adjacent split of U.S. 16 west from SD 44 east. Photo by Jay Maynard (07/06/02).

East West at

The intersection linking U.S. 16 and SD 44 along Omaha Street with West Boulevard south and Interstate 190 north was reconfigured by 2017 to eliminate this traffic island. 08/12/13.

North East

West Boulevard connects Business Loop I-90 (St. Joseph Street east / Main Street west) with the northbound beginning of Interstate 190 directly. The freeway extends north from West Boulevard and Omaha Street (SD 44). 08/12/13

Exit 1C formerly departed here for West Boulevard, but 2016 construction during the I-190/Silver Street Interchange project permanently closed this ramp. 08/12/13

Sources:

I-190/Silver Street Interchange Project. June 2016 Newsletter. ~~http://www.sdi190interchange.com/June2016.pdf~~
The South Dakota Highways Page: Highways 101 to 200. ~~http://www.dm.net/~chris-g/sd100up.html~~
“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 May 8, 2020.