West Main Natural Gas Pipeline Replacement Project

We are working to provide safe, reliable service



As part of our Pipeline Integrity Management Program, we are replacing 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 was completed in 2014. Work in Boulder County started in 2015 and is expected to 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 2015, on a monthly bill, it will cost an average residential customer using 65 therms a month $1.88, and the average small business customer using 278 therms a month $8.04.

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Boulder County


Boulder County Construction

We continue to install pipeline using directional drilling at the following locations in Longmont:

  • Hygiene Road/17th Avenue, east of Airport Road
  • Airport Road and Mountain View Avenue

We are also using open trenching to connect installed pipeline segments. In Longmont, we have traffic controls set up at the intersection of Mountain View Avenue and Airport Road, along 17th Avenue from Airport Road to Harvard Street, and at the intersection of Airport Road and Highway 119. Drivers can expect restricted turn lanes in this stretch of Airport Road, as well as flaggers directing and slowing traffic.

See the map of our construction in Boulder County. For more details on the construction process and the directional bore schedule, see our Construction Details page.


Additional Resources

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