The Hurontario Light Rail Transit (LRT) Tunnel project is a vital transportation infrastructure linking Mississauga and Brampton and was designed to increase access to rapid transit throughout the area. The scope involved the detailed design and installation of the various electrical systems for the new Hurontario LRT tunnel system.
Project Summary
- Comprehensive design and installation of complex electrical systems for new LRT tunnel sections
- Complex power distribution networks engineered for traction power, signaling, and control systems within the tunnel
- Specialized tunnel lighting and life safety systems, including emergency power and redundant systems
- Detailed BIM modeling and coordination for electrical conduits, cabling, and equipment placement underground
- Sustainability measures optimizing tunnel electrical energy consumption in line with the LRT network’s environmental goals
Project Snapshot
| Scope | Electrical (Traction Power, Lighting, Life Safety, Systems) |
| Location | Mississauga & Brampton, Ontario, Canada |
| General Contractor | Mobilinx Hurontario General Partnership |
| Architect | A joint venture of leading engineering firms (e.g., AECOM/HDR) |
Electrical Systems Engineering for a Constrained Underground Environment
Designing tunnel electrical infrastructure means working within tight, fixed geometry where every conduit run and cable path has to be resolved in advance. Our BIM 3D modeling team engineered and coordinated:
- Comprehensive tunnel electrical systems ensuring seamless integration with surface-level LRT stations and existing infrastructure
- Complex power distribution networks for traction power, signaling, and control systems within the tunnel
- Electrical conduits, cabling, and equipment placement modeled precisely for a highly constrained underground environment
Tunnel Lighting and Life Safety Systems
Redundant, secure power for signaling and emergency infrastructure was central to the tunnel’s electrical design. This work included:
- Specialized tunnel lighting and life safety systems, including emergency power and redundant systems for critical operations
- Robust, secure power distribution supporting signaling equipment and emergency infrastructure throughout the tunnel
- Advanced tunnel ventilation and drainage controls integrated into the overall electrical systems design
BIM Coordination and Clash-Free Electrical Modeling
In light of the numerous systems that use the same underground footprint, BIM coordination for our project involved using accurate modeling and clash detection to ensure there were no clashes among any of the tunnel systems before construction. Some of the major results were:
- Detailed BIM modeling and coordination for all electrical conduits, cabling, and equipment placement
- Electrical routing resolved against catenary systems, tunnel ventilation controls, and structural elements ahead of installation
- Field-ready documentation supporting a smooth construction sequence across constrained tunnel sections
Quality Control, Testing, and Sustainability
Delivering a tunnel electrical system that would run reliably for decades required disciplined testing and a long-term sustainability outlook. Our team:
- Managed quality control, testing, and commissioning for all electrical components, including advanced tunnel ventilation and drainage controls
- Collaborated on sustainability measures to optimize energy consumption of tunnel electrical systems
- Integrated electrical design with the overall LRT network’s environmental goals across Mississauga and Brampton
The Hurontario LRT tunnel project is an example of how BIM Services has used precise electrical BIM modeling, coordinated design, and clash-free shop drawings to create safe underground transit infrastructure systems for expanding cities. To see more projects we have done in this field, visit our transportation and transit projects section.
