Proposed Safety Improvements on State Secondary Route 421

Billings Area Highlights

COLUMBUS & JOLIET, MONTANA (September 27, 2019) — The Montana Department of Transportation (MDT) would like to announce and seek public comment on a proposal to widen about 1.1 miles and provide safety improvements on an additional mile of State Secondary Route 421. The project is located approximately 6 miles southeast of Columbus in Stillwater County; beginning at reference post 4.8 and extending southeast for 2.1 miles ending near Tutt Creek at reference post 6.9.

Proposed work includes shoulder widening, shoulder delineation, rumble strips, and guardrail work.  The purpose of the project is to improve roadway safety for the traveling public.

Construction is tentatively planned for 2022 depending on completion of design and availability of funds.  New right-of-way and relocation of utilities may be required.  MDT staff will contact all affected landowners prior to doing survey work on their land.

An important part of properly planning for future projects is partnering with the community. Montana Department of Transportation welcomes the public to provide ideas and comments on the proposed project. Comments may be submitted online at or in writing to Montana Department of Transportation, Billings office at PO Box 20437, Billings, MT  59104-0437. Please note that comments are for project CN 9116000.

The public is encouraged to contact Billings District Administrator Rod Nelson at (406) 657-0229 or Project Design Engineer Jeremy Terry at (406) 444‑6226.

with questions or for additional information.

Alternative accessible formats of this document will be provided on request. Persons who need an alternative format should contact the Human Resources and Occupational Safety Division, Department of Transportation, 2701 Prospect Avenue, PO Box 201001, Helena, MT 59620. Telephone 406-444-9229. Those using a TTY may call 1(800)335-7592 or through the Montana Relay Service at 711.

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