Trim Station Bridge

The pedestrian bridge provides multi-user pathway access at Trim Station. The bridge is enclosed and climate-controlled. This project is part of the broader Confederation Line Stage 2 project (OLRT extension), which expands Ottawa's light rail network to the East. The bridge has two simple spans of 35.2m and 37.6m of Algonquin steel trusses, featuring a 5m wide truss supporting a 4m clear multi-user pathway. Spannovation performed the assembly and erection engineering of the 73m bridge on behalf of the erector, ES Fox.

Steel Erected: Two truss spans weighing a total of 114MT were assembled and erected.

Erection Methodology: Each truss was stick-built on temporary dunnage supports adjacent to their spans using an HTC 8675 crane and a Broderson crane. Eight temporary supports were set to specific elevations to facilitate the assembly of three truss sections before splicing, accounting for truss pre-camber. Once connected, each full truss span was secured with temporary restraints. The height of the temporary supports for the North Span was configured to allow access for SPMTs to position underneath the assembled span. SPMTs moved the assembled span from the staging area to the lift location.

A GMK 6300 was used to lift the assembled truss delivered on SPMTs for the North Span. The South truss was assembled adjacent to the span and lifted directly from the staging area to its final location. The deck panels were lifted using an HTC 8675 crane. To achieve the orientation angle of the truss in elevation, the rigging was configured to include shackles. A chain of extra shackles on one side was used while keeping the sling lengths identical.