West Main Natural Gas Pipeline Replacement Project

We are working to provide safe, reliable service



As part of our Pipeline Integrity Management Program, we will replace approximately 77 miles of 95 miles of high pressure transmission pipeline between Westminster, Colo., and the Wyoming border. The additional pipe will be abandoned or switched to distribution uses. This work will ensure safe, reliable service to our current and new customers along the Front Range.

Work in Larimer and Weld counties started in 2012 and is expected to continue through 2015. Work in Boulder County is expected to start in 2015 and continue through 2016.

This project is one of a package of pipeline integrity management programs and projects that are funded by the Pipeline System Integrity Adjustment (PSIA) rider that appears as a separate line item on Xcel Energy's natural gas customers' bills. We anticipate that in 2014, on a monthly bill, it will cost an average residential customer using 62 therms a month 36 cents, and the average small business customer using 270 therms a month $1.56.

Latest News

Fort Collins

As we finish up construction in Fort Collins, we are restoring roadways in our work zones, and painting above-ground equipment at new valve stations. Before we put the new natural gas pipeline into service, we are preparing to inspect it internally with state-of-the-art equipment.

Southern Larimer County

Currently new natural gas pipeline is being installed using directional boring at the following locations:

  • The Little Thompson River
  • Larimer County Road 4
  • Larimer County Road 6
  • Larimer County Road 8
  • Dry Creek

We are installing new natural gas pipeline by using open trenching from Larimer County Road 19, southwest through open field to Larimer County Road 8, and continuing south to Sundown Lane.

Currently the northbound lane of Larimer County Road 21 is closed between Larimer County Road 4 to just north of Larimer County Road 6. Larimer County Road 21 is open to southbound traffic only in this area. No other road or lane closures are planned for any other work currently in progress.

Have questions? Email us at This e-mail address is being protected from spambots. You need JavaScript enabled to view it or call our information line at 1-855-875-7633. Learn more about our 2014 construction.


Additional Resources

Construction Door Hanger
Xcel Energy’s Pipeline Integrity Management Programs

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