Scott Street Interlocking Signal Tower Generator: Merging Heritage and Contemporary Architecture in Toronto

The Scott Street Interlocking Signal Tower Generator, designed by RDHA, is a remarkable addition to Toronto's architectural landscape. Commissioned by Metrolinx to replace a decommissioned emergency generator serving Union Station, this project seamlessly integrates modern engineering with historical preservation.

A Glimpse into History: The Scott Street Signal Tower

Constructed in 1930 for the Canadian Pacific Railway (CPR) by John Wilson Orrock, the Scott Street Signal Tower is an iconic piece of Toronto's heritage infrastructure. Featuring Italianate round-topped windows, a square tower, and a hipped roof, it represents a significant era in the city's railway history.

Contemporary Interpretation by RDHA

The new generator tower by RDHA is strategically located on Toronto’s westbound Gardiner Expressway off-ramp to Yonge Street, adjacent to the historic Scott Street Interlocking Signal Tower. This juxtaposition of old and new highlights RDHA's commitment to respecting and honoring heritage architecture while introducing contemporary design elements.

Design Philosophy: Balancing History and Modernity

RDHA's approach to this project began with an in-depth analysis of the heritage architecture. The resulting design is a shimmering, reflective formal interpretation of the existing tower, incorporating three corresponding datum lines of lightly polished aluminum. These lines open and close to allow ventilation and partial views into the generator structure, ensuring functionality while maintaining aesthetic integrity.

Sustainability and Innovation

The generator tower is not only a visual masterpiece but also a beacon of sustainability. The design incorporates passive ventilation through facade panels that respond to the generator's cooling needs. Energy-efficient LED lighting, controlled by daylight and occupant sensors, minimizes energy consumption. Additionally, the space between the old and new structures is designed to accommodate a green-planted urban wall, enhancing the project's ecological footprint.

Architectural Integrity and Urban Impact

RDHA's new generator structure stands as a contemporary urban object with architectural integrity that honors its historical neighbor. It functions effectively as an emergency generator while serving as a captivating piece of urban infrastructure. This project renews appreciation for often-overlooked engineering marvels within the city's landscape.

The Scott Street Interlocking Signal Tower Generator by RDHA is a testament to the harmonious blend of heritage and contemporary architecture. It revitalizes a historic structure while introducing a functional and sustainable design. This project exemplifies how modern engineering can respect and enhance historical contexts, creating a lasting impact on urban environments.

All photographs are work of Tom Arban