About the author  ⁄ Ryan Salmon, EIT

Ryan Salmon, EIT (salmon@pvnworks.com), is a project associate at Preservation Design Works, LLC, a historic preservation consulting and project management firm in Minneapolis, Minnesota.

Two days of expected work turned into a week; one equipment breakdown cascaded into another; a 30-minute delay became 24 hours. A documentation project that was scheduled to happen in June did not begin until September. The challenges of keeping a bridge demolition project on schedule are not unique, but the requirement for historical documentation of a 1912 reinforced concrete bridge by historians and engineers added another layer of complexity to a highway widening project. However, this documentation effort ultimately provided interesting information about the early development of reinforced concrete flat slab design.

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Why it Almost Mattered

At the time of this writing, a vacant former bakery is standing for a few more days at the corner of Fifth Street North and Seventh Avenue North, just outside of the official boundary of the local and national historic Warehouse District of Minneapolis, Minnesota. The building is typical of others in the area: a one- to three-story utilitarian structure with little architectural ornamentation and several additions.

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STRUCTURE magazine