EIS & EA

The Montana Department of Transportation (MDT) prepares an environmental study as required by the Montana Environmental Policy Act (MEPA) or the National Environmental Policy Act (NEPA) for actions taken by the MDT unless exempted by law. An action may include projects, permits, and studies where MDT expends funds or takes an action affecting the human environment. These environmental studies determine the affects of the action on the social, economic or natural environment and may result in the preparation of an Environmental Assessment or Environmental Impact Statement. Active and completed documents are listed below.

Open for Comment:

Comments may be sent using the links on this page or via hard copy.
Please mail all hard copy comments to:
Tom Martin
Montana Department of Transportation
PO Box 201001
Helena MT 59620-1001
  • US93 Ninepipe/Ronan Improvement Project EIS
    - Appendices
    - | Closing date for comments is May 12, 2008
Large PDF Documents
In Progress:
Finalized:
To receive a hard copy of any of these documents please call 406.444.7228.
Work In Progress
Links to Project Status