In their competing accounts of what went wrong before last year’s Florida pedestrian bridge collapse, both the contractor and designer agree on one point: The concrete was never “roughened” at ...

Those are the words used last week by one of the National Transportation Safety Board’s investigators, engineer Daniel S. Walsh, in seeking the “why” behind the ...

Of the 756 American bridges that share a design with the collapsed Minnesota span, almost a quarter stand in Ohio. They're not flashy, just roads atop trusses, a mishmash of connected steel sticks ...

The Florida International University pedestrian overpass that collapsed catastrophically during construction last week was advertised as a “cable-stayed” bridge, but it actually wasn’t: Instead, it ...