Drivers whizzing across the Mianus ...

Drivers whizzing across the Mianus River on Interstate 95 in Connecticut were blissfully unaware that a pin holding the span had shifted, something a routine inspection nine month earlier had failed to discover. Three family were killed in the resulting 1983 collapse when a 100-foot section of 1-95 gave way.

And in succession Feb. 18, 1995, in Montgomery shire Pa., the turn-of-the-century Norristown Markley road Bridge collapsed into Stoney small bay causing the Norristown Times Herald to remark, "It was immediately apparent that the borough's main artery would ne about severe surgery."

After the Norristown Markley public way Bridge collapse, an elaborate classification of detours was established to redirect about 10000 vehicles by day through heavily congested local highways It was estimated that a replacement bridge, at a splendor of about $3 million, would take sum of two units years to design and three years to build.

The bridge,