T CH/Sarcee


Construction on the Sarcee Trail – TransCanada Highway (TCH) Interchange is ongoing with no permanent full road closures anticipated over the spring season.
Construction activity will increase over the next month depending on the weather warming trends.
The new east and west bridges require only the finishing surface treatment and are expected to open with the northbound and southbound by-pass ramps in May 2017. With these new by-pass ramps being opened, the new two-lane exit ramp to southbound Sarcee Trail will also be opened to traffic. Following the opening of these two bridges and related ramps, all Sarcee Trail traffic will be switched onto these new roadways to allow the construction of the final roadworks and roundabout to access the new development and adjacent communities.
Work on the upgrades to the southbound to westbound on-ramp to the TCH has begun with the construction of a new retaining wall to support the widened pavement and re-aligning the pathway to accommodate the improved entrance ramp design. The pathway will be closed with a detour in-place until this construction is completed in August.
Full project completion is expected this fall.
For information on The City of Calgary Bowfort Road construction project, please call 311 from within the City or 403.268.CITY.
Updated April 2017

Improving traffic flow

Improvements proposed for the Trans Canada Highway and Sarcee Trail Interchange will facilitate access to Trinity Hills development and improve the functionality of the existing interchange.

Trinity to fund improvements at TransCanada Highway and Sarcee Trail interchange

Trinity Development Group is working with the City of Calgary to fund and construct improvements to the interchange at Sarcee Trail and TransCanada Highway.
A key goal of the project improvements is to improve flow through of traffic in the area, and ensure that the Trinity Hills project does not impact traffic volumes and commute times for commuters living in surrounding areas. The changes will also provide access to the Trinity Hills development.
These interchange improvements will also eliminate conflict points, increasing safety for all drivers.

Included in the scope of the project are construction of two roadway bridge structures, a pedestrian underpass, and retaining walls. At the same time we will include rehabilitation of existing bridges and related earthworks, roadworks and utility works.

Traffic improvements mean uninterrupted traffic flow for commuters

The improvements to the TransCanada Highway/Sarcee Trail interchange are strategically designed to separate the higher volume ‘regional’ traffic movements from the ‘local traffic’ requiring access to the new development and adjacent communities. This design will allow those using the interchange to drive directly through without being impeded or impacted by the local community traffic.


In response to discussions with the community of Wilson Gardens, regarding the current construction access onto Sarcee Trail – TCH, the project team has made the following improvements:

  • The currently designated community exit location was relocated to the final, ultimate location and allows residents to leave the community without conflicting with vehicles entering the community as of December 2, 2016. The community entrance location will remain in the same location.
  • A deceleration lane has been added to the current ‘U-turn’ on Sarcee to ensure normal flow of traffic is maintained while allowing vehicles to slowly leave the main roadway prior to accessing the turning area.
  • The exit to southbound Sarcee Trail will be closed through the duration of the construction until the roundabout is operational

Updated April 2017


The majority of the interchange work will take place off the existing roadways. This strategy will minimize the need for any full road closures or major detours. We anticipate there may be a need for short duration lane closures and speed reductions as we complete ramp connections and other features throughout the project.
Our goal is to minimize traffic impacts as much as possible.
The TCH-Sarcee Interchange is a joint project between The City of Calgary and Trinity. For continued updates on the project, please sign up for the newsletter below.


Learn more about the planned changes. Download the information session materials here.
Download the TransCanada – Sarcee Interchange Handout here

STAY TUNED to this page for updates on construction progress and traffic interruptions, and sign up for the Trinity Hills newsletter.

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Trinity Hills is a property of Trinity Development Group. For more information, please visit www.trinity-group.com.