Banff National Park of Canada

Park Management


Trans-Canada Highway Twinning

Table of Contents | Introduction | Current Twinning | Highway Fencing & Wildlife Crossings

Trans-Canada Highway Twinning Project, Phase IIIB: November 2005

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With trees cleared for the second lane, twinning of the Trans-Canada Highway (TCH) is proceeding on a section of highway east of Lake Louise. Over the last few months, the challenge for the project team has been to stay within its budget and general project schedule in the face of rising construction costs and the in-demand labour market. Despite the challenge, Parks Canada remains committed to twinning as much highway with associated mitigations that current funds will permit, thus delivering the world-class project described in our environmental assessment. When completed, the section twinned will contribute to safer travel conditions for people and wildlife, and smoother flow of goods and services on Canada’s national highway.

Machinery working on the twinning project
Construction on the Trans-Canada Highway
© Parks Canada

Project Update

  • Contracts for initial project work were tendered as scheduled this summer. However, construction costs have been increasing and tenders came in well above estimates. This resulted in some delays as the tenders had to be repackaged and again posted for bid.
  • Preparation for the new lanes is underway with special measures in place to protect soils, water quality, and native plant and wildlife communities.
  • Initial grading work began in mid-October and will continue, Monday through Saturday, until mid-December. Blast rock is going into place on the north side of the TCH from the Bow River to the start of twinning at Lake Louise. Blasting and rock removal is underway about 3 km east of the Lake Louise junction, requiring traffic delays of up to 45 minutes between 10 am - 2 pm. For long weekends and the Men’s and Women’s World Cup Downhill and Super-G weekends at the Lake Louise Ski Area, construction will cease at noon on Friday and resume on Monday. Work will resume in spring 2006 with placing of fill around the Moraine Creek bridge area.
  • A separate gravel crushing operation for construction aggregate is underway with work expected to finish in mid-December. It will not affect traffic.
  • Please obey posted speed limits and flag people through the construction zone.
  • The next Stakeholder Advisory Committee meeting is anticipated for sometime in February to review the past year and provide a complete project update.

Tentative Project Schedule

*subject to change

Fall to Winter 2005
Tree clearing, earth moving, and initial grading for new lanes. Gravel crushing operation.

Spring 2006 to Winter 2007
New Bow River and Canadian Pacific Railway overpass bridge construction near Lake Louise.

Completion of initial earthwork/grading for new lanes between Moraine Creek and Bow River Bridges.

Construction of new lanes, including some underpass crossing structures, earthwork, drainage structures, grading and first layer of pavement.

Spring to Fall 2007
Primary wildlife crossing construction, Moraine Creek bridge.

Extension of existing Bow River bridge near Lake Louise.

Landscaping, highway fencing with Texas gates and wildlife chase out gates; all four lanes in service by November 2007.

Summer 2008
Paving top surface

Project Quick Facts

  • $50 million budget through Infrastructure Canada to start project. Overall cost to twin from Castle Junction to the Alberta-BC border is estimated at $200 million.
  • Summer traffic volumes on the TCH in the park average one vehicle every six seconds. Traffic volume is currently increasing two percent annually.
  • 48 km of the TCH’s 83 kilometres in Banff National Park was twinned between 1979 and 1997.
  • Since 1996, monitoring has revealed that 10 species of large mammals have used the existing 24 wildlife crossing structures more than 60,000 times.
  • Eighteen major crossing structures and dozens of smaller ones are planned for the section of highway between Castle Junction and the Alberta-BC border.

Overview of Twinning Project

An overview of the Trans-Canada Highway Twinning Project
Trans-Canada Highway Project Phase IIIB
© Parks Canada

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For up-to-date information, check the mountain park road conditions report at: 403.762.1450.

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