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.

Latest News

Boulder County


Louisville Work Zone

OOur construction along 96th Street/State Highway 42 (95th Street) near Louisville and Lafayette started in March. Construction crews are currently working at the regulator stations to prepare the new pipeline and stations for service. We currently have flaggers set up at Empire Drive and North 96th Street for our work at the regulator station.

Northern Boulder County Construction

Construction on the remainder of our Boulder County project began in June. We are currently or will soon begin installing new pipeline using directional drilling at several locations in Longmont and northern Boulder County:

  • 87th Street and Vermillion Road
  • Larimer County Road 21/North 95th Street at the Larimer and Boulder county line
  • Airport Road and Buckthorn Drive
  • Airport Road and 9th Street
  • Airport Road and Clover Basin Drive

We are also working on a directional bore in southern Larimer County at County Road 21 and Center Ridge Road, just north of the Larimer and Boulder county line. We are installing new pipeline using trenching along Vermillion Road and north of Yellowstone Road along North 95th Street.

In Longmont, we have traffic controls set up along Airport Road, from just south of Rogers Road and north to Hygiene Road. 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.


Additional Resources

Construction Door Hanger

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