U.S. Highway 85 From Wyoming to Cheyenne Crossing

U.S. Highway 85 Roadway Design

Project Location: Wyoming Border to Cheyenne Crossing
Project Number: NH 0085(106)0 PCN06J8

Project Needs and Goals:

Needs:

• Reduce crash rates

• Replace pavement

• Replace drainage structures

Goals:

• Protect the integrity of the corridor, protect the beauty of the Black Hills, while enhancing the experience for all users

• Improve alignment and add shoulders where possible

• Reduce impacts on the natural environment during construction

Tentative Project Timeline:

Preliminary Design: 2025
Public Meetings and Landowner Meetings: 2026
Tentative Construction: 2030/2031

Public Involvement:

SDDOT Extends Written Public Comment Period for Proposed Design on U.S. Highway 85 Reconstruction Project in Lawrence County

The South Dakota Department of Transportation (SDDOT) hosted a public meeting open house on June 4, 2026, to share the proposed design for the U.S. Highway 85 reconstruction project from the Wyoming state line to U.S. Highway 14A (Cheyenne Crossing) in Lawrence County. The purpose of a public meeting for a proposed project is to provide information and gather public input.

For those who could not attend the June public meeting open house or may desire additional information on the overall proposed project, material is available online at https://dot.sd.gov/ushighway85towy.

Based upon requests from members of the public, the SDDOT has extended the written comment period from the original date of Friday, June 19, 2026, to Friday, Sept. 4, 2026. The date extension will maximize the opportunity for public engagement.

Meeting Date: Thursday, June 4, 2026
Meeting Time: 5:30 p.m.-7 p.m. MT
Meeting Place: Homestake Adams Research and Cultural Center 150 Sherman St. Deadwood, SD 57732

Notice 
Flyer
Presentation
Handout
Display - West Half
Display - East Half

Nov. 19, 2025:

Stakeholder Meeting Presentation

Sept. 9, 2025: 

Stakeholder Meeting Presentation

Dec. 18, 2023: 

Public Meeting Information: 
Notice
Flyer
Location Map
Presentation Handout
DisplaySummary of Public Meeting Comments

SDDOT has extended the written comment period from the original date of Friday, June 19, 2026, to Friday, Sept. 4, 2026.

For more information or to leave a comment please contact:

Steve Murray
steve.murray@fhueng.com

Mark Malone
SDDOT 700 E Broadway Ave., Pierre, SD 57501
Mark.Malone@state.sd.us