Project Update – April 5, 2021

What’s Happening in Traffic This Week

Trans-Canada Highway Reduced to One Lane Nightly

Every night from 10 p.m. to 5 a.m., April 11 to 16, the Trans-Canada Highway will be reduced to a single lane in each direction at the Stoney Trail interchange. The lane closures are needed for bridge overhang bracket installation. Delays are expected.

All work is weather dependent. Please check 511 Albertaand The City of Calgary’s traffic information map  for up-to-date information on traffic detours and speed reductions. For all other project information, please visit

We appreciate your patience during construction.

North Project title banner

Trans-Canada Highway Detour – Preparing Westbound Lanes

Raising the Profile

In the area immediately west of Valley Ridge Boulevard N.W., the Trans-Canada Highway will be raised to improve the steep grades. You can view the new road profile and cross sections at > North Project > Trans-Canada Highway Improvements.

Valley Ridge Boulevard N.W. Interchange

Trans-Canada Highway / Stoney Trail Interchange

There have been several girder lifts in this area recently. Since both of these bridges are over live traffic, the girder lifts require overnight lane closures to place them without risk to the public. 

Controlled Blasting Resuming in Mid-April

Controlled blasting at the north end of the Paskapoo Slope will resume shortly. Crews are back on site excavating and drilling rigs are anticipated to begin drilling blast holes toward the end of this week, with daily blasts starting as early as April 10.

Blasts will happen Monday to Saturday, between 3 p.m. and 5 p.m. Pending progress, blasting is expected to be complete in early August.

South project title banner

Old Banff Coach Road S.W. Bridge Foundation and Piling

A shallow foundation (constructed below ground but close to the surface) can be constructed in areas where the stronger, load bearing soil suitable for carrying the weight of the structure is near the surface, making it unnecessary to dig a deep foundation. 

A spread footing is a specific type of shallow foundation. Spread footing foundations are a simple and flexible design, which can translate into cost savings and faster construction timelines. They have a wider bottom than the load-bearing elements they support, which spreads the weight of the structure over a larger area for greater stability.

A spread footing is being used for the centre piers on the Old Banff Coach Road S.W. interchange.