How the E. Stadium Bridge Gets Monitored
Michael Nearing, an engineer with the city of Ann Arbor, wields a hammer. The hammer was used for two different purposes: "sounding" the concrete for structural integrity and clearing away de-laminated concrete so that it would not fall on cars below.
Since late February, the East Stadium Boulevard bridge over State Street has funneled vehicles across the span in just two of the available four lanes. The lane reduction is a strategy to protect the fifth – counting from the southern edge of the bridge – of the 16 beams in the structure. That fifth beam is “sagging” 7/8 of an inch lower than other beams in the bridge. So traffic is currently restricted to the northern lanes. [Previous Chronicle coverage of the bridge provides additional background.]
In her update to city council in early March, Sue McCormick, the city’s director of public services, indicated that the bridge was being closely monitored in order to verify the safety of the bridge. Here at The Chronicle, we wondered what “monitoring” entailed. [Full Story]