Lees 

Avenue 

Bridge

Project Description

• Winner of Ontario Steel Design Award of Excellence – April 2015
• Use of Rapid Replacement Technology to remove the bridge in just 17 hours, 7 hours ahead of schedule
• Girders installed on temporary structures and concrete deck formed & poured on the erected steel in the staging area close to the location of the existing bridge
• Self-propelled modular transporters (SPMTs) used to lift the poured structure off the temporary shoring and move it to its final location
• Placement of 3,000 tonnes of granular material to create usable access road for removal;
• Placement of 4,200 metric tonnes of granular A for bridge replacement;
• Supplementary work completed during highway closure: removal of 100 meters of Noise Wall; completion of 2 sewer crossings; grinding & paving Central Transitway structure; St-Laurent structure work; installation of a catch basin; removal of 3 catch basins

Requirements

• Removal and replacement of the heaviest superelevated bridge (2100 tonnes) in North America using Rapid Lift Technology;
• The new bridge is a two-span super-elevated structure on structural steel box girders
• Part of the widening of Highway 417 for Ottawa Light Rail Transit Project (OLRT)
• Short time frame for completion during 2 overnight highway closures;
• Removal of the previous three-span Lees Ave Underpass on Hwy 417 was completed by a hybrid in-situ demolition of spans one and three adjacent to the highway and rapid removal of the center span over the highway.

Tomlinson Divisions

This project required the efforts of Tomlinson Environmental Services – Industrial Waste Division, RWT for equipment and trucking and Aggregates for backfill material.