U.S. Highway 12 - Morristown to Watauga

Project Summary:
This nine and one-half mile project involves the complete reconstruction of U.S. Highway 12 including the replacement of the narrow bridge one mile east of Morristown. This once narrow highway with minimal shoulders, upon completion, will have two 12-foot driving lanes along with 6-foot shoulders. The new grade line will provide travelers with improved sight distance, flatter in-slopes, and wider ditches that will allow for more snow storage capacity.
When construction crews and equipment are present during work hours, the traveling public will be guided through the project with flaggers and a pilot car. Motorists should expect delays of up to 15 minutes. Traffic speeds will also be reduced to 45 mph through the work zone.
Project Timeline:
April 22, 2024 - Aug. 2025
Project Updates:
July 22, 2025:
Completed Work June 15, 2025 – July 15, 2025: Rough grading has been completed on the project. Contractor is placing Base Course, Salvaged surfacing on the final two miles grade.
Anticipated work July 15, 2025 – August 15, 2025: Contractor should complete surfacing, placement of topsoil, seeding, fencing, etc. within the next month. Remaining unprimed surface will be primed following placement of all granular surfacing.
Project Photos:
Project Contract Amount:
$23.6 Million
Project Contacts:
SDDOT:© 2025 State of South Dakota. All Rights Reserved.
Becker-Hansen Building
700 E. Broadway Ave.
Pierre, SD 57501
Modern Logic
Region & Area Offices
Travelers
© 2025 State of South Dakota. All Rights Reserved.
Becker-Hansen Building
700 E. Broadway Ave.
Pierre, SD 57501
Modern Logic