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Rockies Expansion Project
Project Type:
Oil & Gas Pipelines
Location: Montpelier, Soda Springs, and Pocatello, Idaho
 Owner: Williams Gas Pipeline-West
 Engineer: Williams Gas Pipeline-West
 Contract Value: Confidential at owner's request
 Contract Type: Shared Risk (negotiated)

Project Photos
*Click on thumbnail to enlarge

Project Highlights
  • 33 miles of 24-inch, high-pressure gas pipeline
  • HDD river-crossing
  • 17 canal, road, and railroad bores
  • 6 miles of wetlands matting
  • 10,300 LF of construction through three golf courses
  • 5.5 miles of rock ditch
  • Strict environmental monitoring and compliance
  • 22 open-cut road crossings
  • 7 open-cut creek crossings
  • 30,000 LF of lava rock sawed to minimize cleanup

Project Details

The Rockies Expansion Project involved three different "loops" or parallel lines for a total of 33 miles of 24-inch, high-pressure pipeline. The work included a variety of conditions: basalt rock, wetlands, urban areas, and the crossing of three golf courses. Work also included one HDD river-crossing and 17 road, canal, and railroad bores. Special environmental requirements included schedule accommodation of several breeding pairs of raptors.
Project Location

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