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

Our construction along 96th Street/State Highway 42 (95th Street) near Louisville and Lafayette started in March. Construction crews are currently connecting newly installed segments of pipeline together between South Street, Empire Road, South Boulder Road, and Paschal Drive.

We are starting restoration at South Boulder Road and heading north, and at the South Street bore area. Crews are also starting work at new pipeline regulator stations and preparing to test the pipeline. Before the pipeline goes into service, we inspect it internally with state-of-the-art inspection equipment, and perform internal pressure tests. We are also beginning to decommission the old pipeline and regulator stations.

We will have traffic controls set up in an approximately one-mile stretch along 96th Street/State Highway 42 (95th Street) from Empire Drive north to Paschal Drive. In addition, the southbound right turn lane of 95th Street at Baseline Road will be closed to traffic. See a map of our work zones. See our Traffic Control details.

Please note, a separate contractor is working on an unrelated intersection improvement project at Baseline Road and 96th Street/State Highway 42 (95th Street).

Our work will be suspended for the Memorial Day weekend and resume on Tuesday May, 26. Work for this segment is on schedule and is expected to be completed in September.

Northern Boulder County Construction

Construction on the remainder of our Boulder County project is expected to begin in June 2015. See the map of our upcoming construction in Boulder County.


Additional Resources

Construction Door Hanger

end faq


Get Project Updates


Contact Us


Subscribe to Our Email List

Thank you for your interest in our project. By filling out the form below you’ll receive project updates by email.