Terwillegar Park Footbridge Canopy’s
Terwillegar Park North Saskatchewan River Crossing, Edmonton Alberta
Donald MacDonald Architects
The $24.5-million bridge was funded by grants from the city, the River Valley Alliance–which is made up of seven municipalities along the river including Edmonton–as well as the provincial and federal governments. The 262 meter long footbridge links Terwillegar Park to Oleskiw River Valley Park on the north side of the river. It is the second-longest stressed ribbon bridge of its type in the world and only the second one in Canada. The footbridges’ design was chosen partly due to its use of fewer construction materials and minimal impact on the environment compared to other design options.
IMARK was chosen to be the construction partner on the final stage of construction – installation of four aluminum canopies, providing shelter above the viewing points of the bridge. The base scope composed of single skin lightweight aluminum cladding that was to be installed directly onto a structural steel canopy assembly. What seemed to be an easy project was in fact one of the most difficult installations of 2016. (read blog: Terwillegar Park Footbridge: Stressing Edmonton Out)
Once the structure was built it became apparent that in order to provide the bridge with a quality installation IMARK had to adjust the steel skeleton, and create a flat and even sub-structure fastening plain. The trick was to hide all additional elements of the substructure so that only the steel structure was visible to the public.
The access to the canopies had to be reviewed and confirmed by a bridge engineer, confirming that the suspended bridge deck can withstand the loads of our equipment. Once approved, we literally squeezed two manlifts into the footprint of the piers, with only inches to spare between the decorative guardrails and the concrete columns supporting the canopy. The reach of each unit and the skills of the operators were put through some serious challenges.
Project Awards and Highlights
We are proud to announce that the Terwillegar Park Footbridge was recognized by Alberta Construction Magazine (ACM) 2016 Top Projects Awards in the Civil categories for projects Under $50 Million and in Civil Design. This is the second project that IMARK was apart of in 2016 that has been recognized by a world renowned publication in the area of construction and architecture. The Castle Downs Park Pavillion was nominated for a WAN Award in the Fall 2016.