US Highway 16 Corridor Study

The U.S. Highway 16 Rural Sub-Area Analysis Report is Complete.

Report Study Recommendation

About

Planning for the future of South Dakota’s driveway to Mt. Rushmore

The South Dakota Department of Transportation (SDDOT) initiated a study of over 16 miles of U.S. Highway 16 between Cathedral Drive/Fairmont Boulevard in Rapid City and the Keystone Wye to address growing traffic volumes and other challenges throughout the area. The corridor is constantly evolving, whether day to day or year to year. Continued development in the area led to notable increases in traffic that are consistent throughout the year. During the summer the corridor sees a spike in tourism-related traffic that brings motorists unfamiliar with the area and a diverse mix of vehicle types.

This study is a collaborative effort between the SDDOT, FHWA, Rapid City MPO, Rapid City, Pennington County, stakeholders, and the public to develop a comprehensive plan for the corridor. This study will serve as a guide to the SDDOT and other agencies along the corridor for future improvements to address needs well into the future.

STUDY AREA MAP

Study Highlights

Overall U.S. 16 Corridor StudyFinal Reports
Sub-Area Analysis (East of Rockerville to West of Neck Yoke Road) Sub-Area Analysis Report Study Recommendation
U.S. 16/U.S. 16B/Catron Boulevard Single Point Interchange (SPI) Study Recommendation
U.S. 16/Neck Yoke Road Reduced Conflict Intersection (RCI) Study Recommendation

Sub-Area Analysis

East of Rockerville to west of Neck Yoke Road

In 2019, the South Dakota Department of Transportation (SDDOT) initiated a study of over 16 miles of U.S. Highway 16 between Cathedral Drive/Fairmont Boulevard in Rapid City and the Keystone Wye to address growing traffic volumes and other transportation needs throughout the area. This study is a collaborative effort between the SDDOT, Federal Highway Administration (FHWA), Rapid City Area Metropolitan Planning Organization (MPO), City of Rapid City, Pennington County, stakeholders, and the public to develop a comprehensive plan for the corridor.

Since the release of the U.S. 16 Corridor Study final report in July 2021, the SDDOT identified a need for further detailed analysis and refinement of alternatives along a U.S. Highway 16 segment from just east of Rockerville to just west of the Neck Yoke Road intersection. Rockerville and Neck Yoke Road intersections are not included in this sub-area.

Sub-Area Map

Objectives

DEVELOP

A long-range plan for the U.S. Highway 16 corridor, which includes the evaluation access:
- Access
- Frontage roads and service roads
- Turn lanes and median crossovers
- Rockerville area routes
- Future traffic volumes and route reliability
- Traffic safety
- Blowing snow
- ITS
- Environmental resources

Determine

Recommend a layout at the following intersections to be carried forward into design and future construction:
- U.S. Highway 16 and U.S. 16/Catron Boulevard
- U.S. Highway 16 and Neck Yoke Road

Document

Create environmental documentation for the U.S. 16/Catron Boulevard and U.S. 16/Neck Yoke Road intersections.

Events

Public Meeting Open House

RCI Information

Minnesota Department of Transportation Virginia Department of Transportation Federal Highway Administration

How RCIs Work (Videos)

About RCIs Semi-Trucks and RCIs Pickups with Loads and RCIs

RCI Testimonials (Videos)

Business Owner Business Owner City Official
COMMENT

Sub-Area Public Information Meeting #1

Baseline Conditions Analysis Boards Conceptual Layouts Boards Meeting Handout Public Open House Presentation

Sub-Area Public Information Meeting #2

Updated Baseline Conditions Analysis Boards Updated Conceptual Layouts and Preliminary Recommendation Boards Meeting Handout Public Open House Presentation (Video)

Resources

Final Reports and Recommendations

U.S. 16 Corridor Study

U.S. 16 Corridor Study Report Recommendations Figure

U.S. 16/U.S. 16B/Catron Boulevard Intersection

U.S. 16/U.S. 16B/Catron Boulevard Intersection Technical Report U.S. 16/U.S. 16B/Catron Boulevard Intersection Evaluation Summary Report Recommendations Figure U.S. 16 Corridor Project Tie-in Figure

U.S. 16 /Neck Yoke Road Intersection

U.S. 16 /Neck Yoke Road Intersection Technical Report U.S. 16 /Neck Yoke Road Intersection Evaluation Summary Report Recommendations Figure

U.S. 16 Sub-Area Analysis

Report Study Recommendation

Public Information Meeting #1
(July 23, 2019)

Meeting Summary Study Overview Boards Presentation Slides Informational Handout Traffic Volumes and Operations Boards Travel Survey Crash History Boards Comment Card

Public Meeting #1 Recording:

Public Information Meeting #2
(December 10, 2019)

Meeting Summary Meeting Flyer Presentation Slides Informational Handout Comment Card

U.S. 16/U.S. 16B/Catron Boulevard Intersection Build Options

Build Option 1: Single Point Interchange » View the SPI Animation Build Option 2: Displaced Left-Turn Intersection » View the DLT Animation Preliminary Evaluation Measures

U.S. 16/Neck Yoke Road Intersection Build Options

Build Option 1: Reduced Conflict Intersection (RCI) Build Option 2: Signalized Intersection Preliminary Evaluation Measures

Other Intersection Build Option Boards

Environmental Boards Access Spacing

General Meeting Boards

Schedule and Study Contacts

Preliminary U.S. 16 Corridor Study Concepts

Preliminary Concepts West of Neck Yoke Road

Public Meeting #2 Recording:

Public Information Meeting #3
(February 2021)

Virtual Meeting Website Meeting Summary

Preliminary Analysis of Existing and Future No-Build Conditions

2019 Existing Conditions Traffic Operations Analysis Traffic Forecasts 2050 Future Conditions No-Build Traffic Operations Analysis Crash History Review

Contact

USE THE COMMENT FORM BELOW OR CONTACT PROJECT MANAGEMENT WITH QUESTIONS

Enter an email or phone above if you'd like to be contacted

Steven Gramm, P.E.

SDDOT Project Manager
(605) 773-3281
steve.gramm@state.sd.us

Jon Wiegand

Consultant Project Manager
(605) 782-8105
jonathan.wiegand@hdrinc.com

US Highway 16CORRIDOR STUDY