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NEPA Number: DOI-BLM-MT-C020-2026-0054-EIS
Project Name: Bridger Pipeline Expansion Project

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Project Information

NEPA Number

DOI-BLM-MT-C020-2026-0054-EIS
Project Name

Bridger Pipeline Expansion Project
Project Type

EIS
NEPA Status

Planned - Preparation and Planning
Lead Office

Miles City Field Office
Last Updated

3/29/2026 5:00:00 PM

Project Description

The Bureau of Land Management (BLM) Miles City Field Office intends to prepare an EIS considering a proposal from Bridger Pipeline Expansion LLC (Bridger) to develop and operate a 647-mile, 36-inch buried crude oil pipeline. The project would extend from the United States/Canadian border in Phillips County, Montana, to an existing crude oil terminal facility near Guernsey in Platte County, Wyoming. The project would include associated infrastructure, including access roads, pump stations, valve sets and pipeline markers. The project is proposed to traverse Federal, State and/or private lands in the following counties: Phillips, Valley, Daniels, Sheridan, Roosevelt, Richland, Wibaux, Fallon and Carter Counties in Montana, and Crook, Weston, Niobrara, Goshen, and Platte Counties in Wyoming.  

In Montana, the pipeline would cross 21.5 miles of BLM administered lands managed by the Malta and Glasgow Field Offices (combined under the HiLine Resource Management Plan) and 31.0 miles managed by the Miles City Field Office. In Wyoming, the pipeline would cross 6.1 miles of BLM administered lands managed by the Newcastle Field Office and 5.2 miles of the Thunder Basin National Grassland, administered by the U.S. Forest Service.

Under the MLA authority, BLM will serve as the lead for the federal agencies and the environmental analysis will be undertaken by BLM and the Montana Department of Environmental Quality (DEQ) who will be working as Joint Leads. DEQ requires completion of an EIS under the Montana Environmental Policy Act (MEPA) as part of their Major Facilities Siting Act process. The U.S. Army Corps of Engineers, U.S. Fish and Wildlife Service, and U.S. Forest Service will be acting as Cooperating Agencies on the project. Additional Federal, State, and local government entities may join the project as Cooperating Agencies, Co-leads, or in some other official capacity in the future.

What's New

March 30, 2026 - It is anticipated that the Notice of Intent (NOI) to begin public scoping on the Bridger Pipeline Expansion project will publish in the Federal Register on April 1, 2026. This will begin the 30-day public scoping and comment period in conjunction with the Montana Department of Environmental Quality comment period. Specific meeting details, including dates, times, and venue information, will be updated in the coming days.

Project Location

City	State/Territory	Zip Code	County(ies)
Miles City	Montana	59301	Custer

Application Information

Applicant

Bridger Pipeline Expansion LLC
Case File Number

MTMT 106781588 / WYWY 106782237
Program

Lands and Realty
Sub-Program

Rights-of-Way

Project Dates

Start Date

2/23/2026

Project Office Information

Lead Office

Miles City Field Office
Offices

Glasgow FO, Malta FO, Miles City FO, Newcastle FO

Contacts

Contact 1 Name

Phillip Blundell
Contact 1 Email

[email protected]
Contact 1 Phone

(406) 896-5119