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 »

Caley Drive Piney Creek Crossing

The East Caley Drive crossing of Piney Creek in Centennial, Colorado, had been a low water crossing since the 1970s, but it had increasingly become a safety hazard. The Urban Drainage and Flood Control District and the Southeast Metro Stormwater Authority retained Ayres to evaluate alternatives for the crossing and to design stream stabilization and… Read More »