Since the I-35W bridge collapse last week, there has been a lot of attention on how, and how often, bridges are inspected. As investigators look for the causes of the collapse of the Minneapolis bridge, engineers around the country continue their inspections, hoping to find evidence that could prevent the next bridge failure.
MPR's Tom Crann spoke with Wisconsin State Bridge Engineer Finn Hubbard. Hubbard has performed bridge inspections and he says engineers need special equipment to see the underside of major bridges.
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