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In Calgary, the Canadian Pacific Railway slices through the heart of the city, dividing the downtown core from the Beltline neighbourhood. On a daily basis, tens of thousands of vehicles and pedestrians transit below its hulking underpasses, key gateways that have deteriorated over the years.

Commissioned by the City of Calgary as part of a larger rehabilitation project, local firm Marc Boutin Architectural Collaborative reanimated the dreary 4th Street SW underpass with a corridor of light and colour. “It’s pragmatic and poetic,” says principal Marc Boutin, “a combination of traffic infrastructure, urban armature and public art woven together.”

LED screens on either side of the underpass transmit the movement...
Marc Boutin Boldly Illuminates a Calgary Underpass

The once-dreary underpass is animated by LEDs that transform movement into dramatic, colourful, displays.

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