Trans Mountain Expansion Project

The Trans Mountain Expansion Project (the Project) is a $7.4-billion construction project. The expansion will parallel the 1,150-km route of the existing Trans Mountain Pipeline, which was built in 1953 and is the only West Coast link for Western Canadian oil. Pipeline capacity will increase from 300,000 to 890,000 barrels of oil per day.

The Project will add approximately 980 km of new pipeline and reactivate 193 km of existing pipeline. To support the expanded pipeline, new facilities will include 12 new pump stations, 19 new tanks added to existing storage terminals, and three new berths at the Westridge Marine Terminal.

Routing of the expansion will remain along the existing Trans Mountain Pipeline route where practical – 89 per cent of the new pipeline will parallel the existing pipeline system or linear infrastructure, minimizing environmental and community impacts.

On December 16, 2013, Trans Mountain filed a Facilities Application for the Project with its regulator, the National Energy Board (NEB).

On November 29, 2016, the Government of Canada granted approval for the Project. In addition, on May 19, 2016, following a 29-month review, the NEB concluded the Project is in the Canadian public interest and recommended the Federal Governor in Council approve the expansion. These approvals will allow the Project to proceed with 157 conditions.

The Project came about in response to requests from oil shippers to help them reach new markets by expanding the capacity of North America’s only pipeline with access to the West Coast. These shippers have made significant 15- and 20-year commitments that add up to roughly 80 per cent of the capacity in an expanded Trans Mountain Pipeline.

With oilsands production expanding in Alberta in the years ahead, new markets and opportunities are emerging. As countries in Asia Pacific begin to develop the same quality of life we enjoy in Canada, they need to secure sources of energy.

Canada is a natural trading partner for these countries, and with an expanded Trans Mountain Pipeline system will be in a position to meet their growing needs for years to come. For almost five years, we‘ve consulted with thousands of individuals through 159 open houses or workshops along the pipeline and marine corridors, and organized more than 1,700 meetings between Project team members and stakeholder groups. The input and feedback we’ve gathered has created a stronger, safer and more responsive Project. We have made hundreds of firm commitments to address concerns, and are required to meet all conditions put forward by the National Energy Board.

For more information on the Trans Mountain Expansion Project visit

Project Scope

  • Projected capital cost is approximately $7.4* billion
  • Approximately 980 km of new pipeline
  • 73% of the route will use the existing right-of-way, 16% would follow other linear infrastructure such as TELUS, Hydro or highways and 11% would be new right-of-way
  • Reactivation of 193 km of reactivated pipeline
  • 12 new pump stations to be built
  • 19 new tanks to be added to existing storage terminals in Burnaby (14), Sumas (1) and Edmonton (4)
  • Westridge Marine Terminal in Burnaby to be expanded with three new berths
  • Existing line to carry refined products, synthetic crude oils, light crude oils with capability for heavy crude oils
  • The new line will carry heavier oils with capability for transporting light crude oils

*Actual Project costs may change.

News Releases
November 29, 2016
May 20, 2016
December 16, 2013
January 10, 2013

Contact our Project Team:
Ph: 1 (866) 514-6700