Project Update – March 22, 2021

What’s Happening in Traffic This Week

Overnight Detour: Eastbound Trans-Canada Highway to Northbound Stoney Trail

Tonight is the last night for this ramp closure. Between 10 p.m. and 5 a.m., traffic coming from the east wanting to go north on Stoney Trail will be detoured to the Bowfort Road N.W. interchange.

Overnight detour: Southbound Stoney Trail to Eastbound Trans-Canada Highway

From 10 p.m. to 5 a.m. each night, March 22 to 25, the ramp from southbound Stoney Trail to eastbound Trans-Canada Highway will be closed for bridge work. Traffic will be detoured to the Valley Ridge Boulevard N.W. interchange.

All work is weather dependent. Please check 511 Alberta and 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.

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Trans-Canada Highway Detour West of Valley Ridge

Last week, the eastbound Trans-Canada Highway lanes were shifted onto the detour road east of Old Banff Coach Road. In the coming weeks, the westbound lanes will be shifted to the detour and work on the planned improvements will begin.

Please expect delays and drive cautiously through the area.

Valley Ridge Boulevard N.W. Interchange

Stoney Trail / Trans-Canada Highway Interchange

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Old Banff Coach Road S.W. Bridge Foundation

A mud slab is a thin layer of concrete that provides a level, dry area to work from. It is not a structural component of the bridge’s foundation, but it does serve as a platform for the wooden forms for the centre pier footing, which is a structural element.

Earthworks at Bow Trail S.W.

Excavation is underway at Bow Trail S.W. With no existing infrastructure in this area, there is a considerable amount of earth to move. 

Tree and Brush Removal within the Highway Right-of-Way

As design has progressed for the last several months, the project footprint has been refined. Some trees and brush need to be removed to accommodate utility installations, backslopes in the areas where the road is lowered and semi-permanent stockpiles of fill material. 

The removals are expected to begin this week and be completed in April 2021. For more information visit