The City of Calgary is investing $12.5 million in rehabilitating the 4th Avenue Flyover to extend its service life by approximately 35 years. Originally built in 1982, the bridge requires repairs and improvements due to deterioration caused by age. The project aims to ensure the bridge remains functional, reliable, and in good condition for commuter use. Streetlights will also be added to enhance roadway visibility for motorists.
Construction is scheduled to begin in early April 2024 and is expected to be completed by late fall 2025. Several traffic impacts, including lane closures and full closures, are planned during the construction period to minimize disruptions. Commuters are advised to plan for delays, use alternate routes or transportation modes, and stay updated on road closures and detours through calgary.ca/trafficinfo.
The City has provided the following expected dates for traffic interruption:
1. Wednesday, April 3 to Friday, April 5 – Off-peak single lane closures on the flyover to conduct pre-construction site surveys.
2. Friday, April 5 at 9 p.m. to Monday, April 8 at 5 a.m. – Complete closure of the flyover to set up construction (weather dependent).
3. Starting Monday, April 8 – One lane on the flyover will be closed (24/7) and accordingly traffic will be reduced to a single lane. (Note that both lanes will be open to traffic during the Calgary Stampede.)