Location
Calgary, Alberta
Expertise
Transportation
Bridges
Infrastructure
Water Resources
Water Supply, Storage, & Distribution
Share
As part of The City of Calgary’s ongoing Glenmore Dam Upgrade program, the existing bridge deck required replacement and new steel stop logs needed to be installed.
After extensive conceptual investigations, the decision was made to relocate both the feedermain and gas line via a tunnel beneath the Elbow River, directly downstream of the Glenmore Dam.
Key Aspects and Challenges
- New 1500 mm C300 concrete feedermain and 300 mm gas line located within a 1650 mm concrete tunnel
- Five (5) vertical access shafts, varying in depth from 7 m to 31 m, required for installation of the tunnel components, for construction
- Almost 700 m of 1650 mm diameter tunnel
- Tunnel crossing 9 m below the Elbow River, and tie-ins between the new and existing feedermains on each side of the tunnel to mitigate construction risk and improve redundancy.
- Multiple high-rise utility crossings, which the tunnelling contractor elegantly resolved by proposing a revised methodology to his and the City’s benefit; revised methodology included a sloped tunnel and added in access shafts to be used for tunnel construction.
- Narrow shutdown windows; the feedermain is critical to South.
Project Highlights
People on this project
More Transportation Projects
See all projects
Pedestrian Bridges
Hangingstone River Pedestrian Bridge
Transportation
Highway 17 at County Road 508 Interchange
Transportation
Yorkton Cycling Network
Transportation
St. Andrews Lock and Dam Comprehensive Detailed Inspection
Transportation
Edmonton Valley Line – Stage 1
Transportation
Vancouver International Airport Rainwater Harvesting
Transportation
170th Street Pedestrian Bridge
Infrastructure
Baxter Bridge Rehabilitation
Land Development
Royal Bay Subdivision
Transportation
McKay River Bridge
Infrastructure
Highway 69 Twinning
Transportation
Broadway Street Improvements
Transportation
Pedestrian Bridge 151 Rehabilitation
Transportation
Cowichan Valley Trail Bridges Condition Inspection and Load Rating
Active Transportation
Highway 1 at Mountain Highway Interchange
LEADERSHIP INSIGHTS
See all insights
Articles
Jun 26, 2021
Rehabilitating Moose Jaw’s Thunderbird Viaduct will restore high priority heritage bridge
Articles
Oct 9, 2023
Timely rehabilitation of Baxter Bridge reinstates reliable transportation linking BC’s Okanagan region
Articles
Jul 5, 2022
Making connections has been key to Sarvejit Nagi’s career in consulting engineering
Articles
Jul 5, 2024
John Maree highlights the value of his mentors who influenced and guided his career journey
Articles
Jul 24, 2023
Rehabilitation of Battleford Truss Bridges restores heritage structures and improves access
Articles
Dec 14, 2023
[ViewPoints] The Crucial Role of Owner’s Engineers in Alternative Delivery Projects
Articles
Oct 7, 2024
Infrastructure improvements provide greater safety along Port Moody’s busy St. Johns Street
Articles
Dec 29, 2019
Detailed investigation of Toronto’s Prince Edward Viaduct identifies safety improvements
Articles
Jun 27, 2021
Fischer-Hallman Road improvements support the Region of Waterloo’s transportation goals in a developing community
