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> 150 North Riverside is 54 stories high and is an anchor along the west end of the Chicago River’s south branch.
> What catches your eye is not the glass exterior, it's the cantilevered base.
150 N. Riverside is sometimes referred to as "The Tuning Fork", and one glance of the building will show you why. The first eight stories of the building have a smaller base than the rest.
For years, the 2-acre site in the area known as the Confluence was considered to difficult to work with by developers. Understandably so, the buildable site was only 39 feet wide. It wasn't until 2012 when the land was purchased that architects from Goettsch Partners and engineers from Magnusson Klemencic Associates were tasked with designing a structure for the land. Most tall structures have a wide base for support, but this 54-story building seemingly turns structural logic upside down. It's smaller at the base and widens for 8 stories. The design makes use of a massive concrete structure at the core that helps connect the upper floors to the foundation. While it was being constructed, it took 81 floating barges to support the 2 million pound crane on the river. The crane maneuvered uniquely large and long steel trusses that allowed the building to be structured as it is.
The building is one of the most-awarded towers in the city, receiving national and international acclaim, both for its design and its engineering. It also features the largest digital art installation in the City, the (also) award-winning "150 Media Stream".
Cover image source: Daniel Lobo, Public Domain.