4th Avenue Flyover Rehabilitation
Thank you for your patience while we make improvements to the 4th Avenue Flyover Bridge.
Project Update: March 2025
Calgarians can expect intermittent rolling lane closures (overnight only) of Memorial Drive, Edmonton Trail, and Riverfront Avenue beginning the week of March 10, 2025. The work will happen over a period of five weeks, beginning at the north end of the flyover, to remove the work platform on the right side of the bridge.
The impacts of these closures are anticipated to be minimal, however we apologize for any inconvenience this may cause and appreciate your continued patience.
Please also be advised that Enmax is performing important utility upgrades in the area in support of The City's Bridgeland Main Street project. This work is adjacent to the 4th Avenue Flyover project and will likely affect mobility throughout the area. Visit the Bridgeland Main Street project page here for more information.
About the project
The 4th Avenue flyover was built in 1982. This flyover carries two lanes of traffic towards 3rd Street S.E. As one of the main routes into downtown, the overall structure spans 430-meters crossing over the Bow River.
Originally built in 1982, Calgary’s longest bridge structure, the 4th Avenue Flyover needs major repairs and improvements after 42 years of daily service for motorists entering the Downtown. The City is investing $12.5 million to help ensure the bridge continues to be functional, reliable, and in good condition for commuter use for decades to come. Construction will begin in early April 2024 and is anticipated to be complete by late fall 2025.
Throughout construction, there may be lane closures of underpass roads for overhead work. These closures will be temporary and during off-peak hours.
Partial and temporary closures within Flyover Park are necessary during construction to prioritize public safety. We will install temporary fencing as needed. Our goal is to minimize disruptions and keep the park accessible to the public whenever possible. We apologize for any inconvenience this may cause and we appreciate your patience during construction.
Overlooking 4th Avenue Flyover
Underneath 4th Avenue Flyover
Daytime photo of the west-side barrier
Overlooking 4th Avenue Flyover and Flyover Park
Night photo overlooking 4th Avenue Flyover - traffic heading into downtown
Night photo of the west-side flyover barrier
Scope of work
The project scope of work includes:
- rebuilding existing concrete barriers and adding lighting
- replacing existing concrete paving overlay with a polymer modified asphalt (PMA) overlay
- replacing existing expansion joints, and other general concrete repairs across the structure
Benefits
The project benefits include:
- improving the condition of the flyover, including the addition of streetlights.
- extending the service life of the flyover by roughly 35 years.
- improving one critical link in the transportation network to help with Calgary's continued growth in the coming years.
Project timeline
- Design Completion: 2023
- Tender to Market:
October 2023 - Construction Start:
Spring 2024 - Construction Completion: Anticipated - late fall 2025
Construction activities are dependent on several factors. Timelines may change due to inclement weather, complexity, supply chain, and/or other unexpected circumstances.
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Contact Us
Have questions or want to learn more about the projects? Contact the project team at: 4aveflyoverrehab@calgary.ca
Budget
Estimated Budget: $12.5 million