Archive

I-35 Bridge River Analysis

Ayres played an important role in the extraordinary project that quickly reconstructed the I-35W bridge over the Mississippi River in Minneapolis in the wake of the previous bridge’s tragic August 2007 failure. The Minnesota Department of Transportation set an aggressive completion target of December 24, 2008, for the project and hired the design-build team of… Read More »

Merrimac Railroad Bridge Inspection

Wisconsin & Southern Railroad Co. retained Ayres to provide a comprehensive study and evaluation of a leased bridge near Merrimac. The structure is a 22-span, 1,729-foot-long open-deck truss/open-deck girder structure over the Wisconsin River. Services included field survey and underwater contour mapping, underwater inspection with divers, structural steel superstructure inspection, load rating, risk analysis, cost… Read More »

New Jersey Route 52 Bridge H&H Analyses

Ayres performed tidal hydraulic, scour, and stability analyses for the proposed Route 52 bridge replacement over Great Egg Harbor Bay. The modeling determined design discharge rates, water surface elevation, flow depths, and flow velocities along the proposed bridge alignment. Scour analyses were performed for the 100- and 500-year storm tide events. Long-term lateral and vertical… Read More »