I-35W bridge collapse (2007)
The eight-lane I-35W bridge over the Mississippi River in Minneapolis collapsed during evening rush hour, killing 13 and injuring 145. The National Transportation Safety Board found a design flaw in the steel gusset plates, compounded by heavy construction loads.
Federal scrutiny of bridge inspection practices intensified, and Congress moved to increase highway and bridge funding.
States strengthened bridge inspection programs and accelerated replacement of structurally deficient spans.
Routine bridge repair projects like Whitehall's are part of the ongoing maintenance that keeps aging spans from reaching a crisis point. The 2007 collapse is the worst-case reminder of why this work happens.
