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. 

Latest News

Boulder County


East Boulder County/Niwot

Crews continue to install new pipeline using directional boring under Valmont Road and Boulder Creek, along 95th Street. We are preparing to bore under the Boulder and Whiterock Ditch, located just south of Niwot Road. In addition, crews are preparing work areas for construction by clearing brush along 95th Street, north and south of Highway 52. Our crews are installing new pipeline by open trenching in this area.

We have traffic control set up in our work zone, and drivers should expect flaggers slowing traffic and reduced lanes from Isabelle Road and north past Boulder Creek. Weather permitting, we expect our work to last until December 2016. See a map of our 2016 work zones.

North Boulder County/Longmont

We have completed pressure testing and drying the new 16” pipeline, and will soon be testing and drying a shorter 12’’ lateral connection pipeline located along Vermillion Road between 87th Street and 95th Street. This process ensures the integrity and safety of the new pipeline and requires 24 hour/day operations (including Saturdays and Sundays) until it is completed. Elevated noise levels associated with our work are expected at the following locations:

  • North 87th Street and Vermillion Road
  • North 95th Street and Vermillion Road

We understand that our construction operations can be an inconvenience and we appreciate your ongoing patience. If you have any questions or concerns, please contact us directly at This e-mail address is being protected from spambots. You need JavaScript enabled to view it or 1-855-875-7633.

For more details on the construction process and specific directional bore locations, see our Construction Details page.

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