According to Spectra, the pipeline will move more than one billion cubic feet (Bcf) per day of natural gas from the growing supply basins in the Rocky Mountains to markets in the Pacific northwest and California where demand is reportedly increasing.

The more than 650-mile proposed route will be positioned to access basins in Colorado, Utah and Wyoming, and then traverse westward to Malin, Oregon, a key trading point for western markets in the US.

Spectra Energy said that it has been actively working with other transportation providers to ensure that key receipt points will have access to the project. Preliminary construction costs are estimated to be close to $3 billion and the pipeline would be placed into service in 2011.

Guy Buckley, Spectra Energy’s vice president of corporate development, said: As a new transportation option, the Bronco pipeline offers western markets greater opportunities for diverse, cost-competitive and flexible supplies while providing producers certainty that their gas will have access to adequate pipeline capacity for years to come.