Bridge-building method used in Florida collapse also found in western Pa.

The pedestrian bridge that collapsed near Miami, Florida only took a few hours to assemble.

It's a process called accelerated bridge construction, a type of time-saving technology where it's built off-site and slid into place quickly.

A similar process was used last year to quickly construct a bridge over the Pennsylvania Turnpike in New Sewickley.

In 2016, crews used the ABC Method, as it's called, to build a bridge in East Pittsburgh.

Florida International University, the campus where the bridge was, hosted a webinar on the East Pittsburgh bridge before constructing the pedestrian bridge that collapsed Thursday.

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