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NWE Contact Bar, in Montana dial 1-888-467-2669, in South Dakota or Nebraska dial 1-800-245-6977
Important Message  Due to a system maintenance scheduled to begin at 6pm on Thursday, November 14th, our Contact Centers will be staffed for emergency purposes only on Friday, November 15th and our Walk-in Offices will be closed on Friday, November 15th. Normal business hours will resume on Monday, November 18th. Access to Online Customer Care services will be unavailable during this system maintenance.

Road Closure Planned for Portion of Boulder Avenue Beginning Tuesday, Aug. 11

Aug 07, 2015

Butte, Mont. – August 7, 2015 – NorthWestern Energy will be relocating a natural gas line located below Helena’s Boulder Avenue to accommodate the upcoming Montana Department of Transportation’s Capitol/Cedar Interchange Project. 

The relocation will necessitate the closure of the street beginning on Tuesday, Aug. 11, 2015, and continuing for up to four weeks. Traffic on Boulder Avenue from Washington Street to California Street will be rerouted. 

The closure will allow crews to safely perform the work necessary to relocate the line before construction begins on changes to the interstate above Boulder Avenue.

NorthWestern apologizes for any inconvenience the closure may cause.  For any questions or concerns, please call our Customer Contact Center at (888) 467-2669.

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About NorthWestern Energy
NorthWestern Energy provides electricity and natural gas in the Upper Midwest and Northwest, serving approximately 692,600 customers in Montana, South Dakota and Nebraska.  More information on NorthWestern Energy is available on the company's website at

Media Contact:
Butch Larcombe
(866) 622-8081

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