• April 08 2026

DILLON, Mont. — The Montana Department of Transportation (MDT) and its partner Jeffery Contracting, LLC, will begin work in mid-April on Montana Highway 91 (MT 91) south of Dillon, weather and other factors permitting. The project is located near the intersection with Carrigan Lane.

“Overall, this is a relatively short one-season project that will enhance safety by realigning the curve, widening shoulders, flattening slopes, and upgrading signage, markings, and rumble strips,” says Rick Sandoval, Engineering Project Manager for MDT.

Traffic flow will be maintained during construction, but drivers may experience reduced speeds when traveling through the work zone. Please follow all posted signage and watch for workers.

To receive project updates via text, text “DILLON” to 844-764-2126.* 

The public is encouraged to contact Laura Langdon at 406-447-3354 with questions or comments about the project.

For more information about active MDT projects around the state, please visit our website and MDT’s five-year Tentative Construction Plan.

*Note: Message and data rates may apply. Four messages/month. Reply STOP to opt-out anytime. Reply HELP for help. Texting alerts are not managed by MDT and may have different privacy and security policies. Terms and Privacy Policy can be found at simpletexting.com/terms.

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Project name:  SF 179 Curve S of Dillon
Project ID:  HSIP 222-1(8)2
Control Number: 9602000

Tags: News Releases and Construction