Friday, February 24, 2012

Airport Trail Tunnel concrete pour begins

The City of Calgary started the first concrete pour for the Airport Trail Tunnel walls and roof this morning at 6 a.m., the first of 50 sections that will be completed by the end of 2012. Each section involves a continuous 12-hour process of pouring 850 cubic metres of concrete into the formwork.

“This is a major milestone for this project, it’s the start of the actual building of the tunnel walls and roof,” says Gordon Stewart, Director of Transportation Infrastructure. “We are seeing various stages of construction taking place simultaneously around the tunnel site and the majority of work so far has involved digging and removing rock and dirt and laying the foundational pieces like utilities. Now we are starting to build up.”

Crews from PCL Construction have made considerable progress on construction activities that began in 2011 and the project is on schedule and within budget.

The excavation for the tunnel is now complete and excavation and utility work continues on site outside the tunnel footprint. The close coordination with the Calgary Airport Authority and their project team is working well.

Approximately 390,000 cubic metres of rock have been excavated and 500-metres of underground utilities have been installed under the tunnel footprint.

The project is scheduled to be completed in May 2014 and the final structure will be a 620-metre long, six lane tunnel that connects Barlow Trail to 36 Street N.E. The tunnel will run underneath the new runway being built by the Calgary Airport Authority and will be an important part of the multi-modal transportation network in the northeast quadrant of Calgary and provide an additional east/west connection to the airport and area communities.

For more information on this project visit

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