In addition to ensuring the continuity of this link between Montréal and Laval, this ambitious project included the design and construction of a reserved Pie-IX BRT (Bus Rapid Transit) bus lane on the bridge, along with a multi-purpose pedestrian-cycling path on the east side and a sidewalk on the west side.
The structural component of the work included complete reconstruction of the deck, girders and guardrails, along with reinforcement of the piers in order to support the new wider deck and increase the seismic resistance of the structure.
In addition, interventions were required at each end of the bridge within the Pie IX Bridge corridor. On the Montréal side, the intersection of Boulevard Pie-IX and Boulevard Henri-Bourassa was reconfigured, incorporating a specific continuous-flow intersection geometry featuring three at-grade intersections with displaced left turns.
On the Laval side, construction work was carried out on two overpasses at Boulevard de la Concorde and Boulevard Lévesque Est. Construction of an access ramp for the reserved lane running down the centre of Route 125 at Boulevard de la Concorde was also completed.
The main challenge for CIMA+ was in planning comprehensive repairs to the bridge while integrating it into the existing urban landscape. This project significantly transformed the infrastructure, altering its functionality with the addition of multiple modes of transportation (e.g.: cycling, bus, walking and improved access for persons with reduced mobility) while partly preserving its original aspect. In addition, a reserved bus lane with coloured asphalt was incorporated into the design, considerably facilitating public transit accessibility for neighbouring communities.
Contribution related to sustainable development
The intersection of Boulevard Pie-IX and Boulevard Henri-Bourassa constitutes a critical node for road transportation and public transit. With the implementation of the BRT service, the Pie-IX Bridge has become one of the keys to improving the public transit surface network in the metropolitan region, facilitating travel and stimulating economic development in the area, including along Boulevard Pie-IX and in the neighbourhoods through which it runs, such as the Borough of Montréal-Nord.
Enhancing Active Transportation and Safety: Integrative Design for the Pie-IX Bridge Project
Another objective of the project was to promote active transportation. A sidewalk was included on the west side, and a multi-purpose path was added on the east side. This path will connect the Montréal and Laval bicycle networks, thus allowing for continuity of travel and enhancing safety by encouraging sustainable modes of transportation. As such, the project contributes to social cohesion and the enhancement of mobility and accessibility in the community by encouraging public transit and active modes of transportation.
The CIMA+ designers and their subcontractor, GR7 Architecture, implemented a number of measures aimed at enhancing the safety of travel on and around the Pie-IX Bridge. These measures are designed to create a tunnel effect to induce drivers to slow down, even though the bridge is now wider. The project stands apart for its use of a coherent array of innovative road safety measures built into its architecture. Thanks to the support and active participation of the MTMD’s partners, the designers consulted with numerous stakeholders in order to identify their needs and concerns and improve the project.
Backed by its expertise in environmental protection, the CIMA+ team was able to create a new fish spawning ground to offset the negative effects of the project during the construction work. This new spawning ground, which spans more than 6,000 square metres, makes it possible to enhance and create sustainable breeding habitats for a number of fish species, including lake sturgeon, largemouth bass and walleye.