The Government of Alberta will replace the existing eastbound bridge over the Bow River on Southeast Stoney Trail in Calgary, widen the westbound bridge and build a new, stand-alone pedestrian bridge.

Stoney Trail is a major trade corridor for the movement of people in Calgary, and goods throughout southern Alberta. Approximately 53,000 vehicles travel the Bow Bridge daily. It is important to complete this work now, in advance of completion of the remainder of the Calgary Ring Road and the anticipated increase in traffic volume.

The $60 million South Bow River Bridge project will improve traffic flow by reducing stop-and-go traffic and congestion. The existing eastbound bridge is nearing the end of its service life and requires safety improvements for pedestrian traffic. The new pedestrian crossing will be separate pedestrian traffic from the ring road, and will provide a better connection to the City of Calgary trail system.

The South Bow River Bridge Project will support about 357 jobs and take about 3 years to complete.

Project details

Construction of the South Bow River Bridge is beginning Spring 2021. The project includes:

  • in-stream berm construction for bridge construction works
  • replacement of the existing eastbound Stoney Trail bridge with a new, wider bridge over the Bow River
  • widening the existing westbound bridge to add a fourth lane
  • a new pedestrian bridge south of the existing bridge that will connect to the existing pathway networks
  • improvements to interchanges between Sun Valley Boulevard/Chaparral Boulevard and Cranston Boulevard /Mckenzie Lake Boulevard


  • September 2020
    • The project was announced.
  • January 2021
    • Contract awarded to PCL Construction.
  • April 2021
    • Berm construction begins on the east side of the river.
    • 8 kilometres of north/south pedestrian pathways will be detoured on the east side of the Bow River between Rotary Park and the South Fish Creek Bridge. This detour will apply for the duration of the construction project.
    • Pedestrian and vehicular access from McKenzie Meadows Drive / 24th Street SE to Rotary Park (Fish Creek Provincial Park) will be closed intermittently for the duration of the project.
    • Vehicle access to Mackenzie Meadows Golf Club via McKenzie Meadows Drive SE will remain open.
    • Signage along McKenzie Meadows Drive S.E., 24th Street and pathways will contain information about closures and detours
  • May 2021
    • Bridge demolition begins affecting the pathway on the east side of Bow River.
    • An additional intermittent pedestrian detour will apply along the west side of the Bow River between Lafarge Meadows and the South Fish Creek Bridge.
    • East/West pedestrian access across the bridge under Stoney Trail will close permanently until construction of the new pedestrian bridge is complete. Access across the river will be via the South Fish Creek Bridge (see detour map).
  • June – August 2021
    • Berm construction anticipated to begin on the west side of the river
    • Intermittent pedestrian and vehicle closures and detours will remain in effect
    • Signage along McKenzie Meadows Drive, 24th Street and pathways will be updated accordingly

    This is a multi-year project with construction continuing beyond one construction season. Future closures and detours can be expected and will be communicated as they arise.

Traffic impacts

During construction, on-site signage will share information about traffic impacts. Please plan ahead and visit 511 Alberta and the City of Calgary traffic map for up-to-date traffic impacts.

Bow River pathway and park access detours

During construction, pathways, pathway access closures and detours will be in place and shared through onsite signage. Please plan ahead and visit the City of Calgary Parks - Pathway and Bikeways Map

Stoney Trail construction bridge replacement pathway detour map, April 2021 to October 2022, use South Fish Creek Bridge



For more information on the South Bow River Bridge:

Hours: 8:15 am to 4:30 pm (open Monday to Friday, closed statutory holidays)
Phone: 403-200-6935
Toll free: 310-0000 before the phone number (in Alberta)

For information about construction, please contact:
Estella Petzold
Project Coordinator
Alberta Transportation
Email: [email protected]

For information about impacts to pedestrian pathways, please contact the City of Calgary by dialing 311.