NTSB Investigation of Bridge Collapse Continues

National Transportation Safety Board ^ | 3/21/2018 | National Transportation Safety Board Office of Public Affairs

[1Old Pro]

The roadway was not closed while this work was being performed.

Out of character for the government not to inconvenience travelers.

[EVO X]

Might be helpful to provide a link

https://www.youtube.com/watch?v=2UE3wopmfZk

[EVO X]

Out of character for the government not to inconvenience travelers.

You raise a good point. Why was this work being done at the peak of snowbird season and not during the summer when students and vacationers are not around?

[petitfour]

Because they were attempting to prove that you can build a bridge with minimal inconvenience to travelers. Unfortunately, it is now a major inconvenience and a fatal one at that. This is something you imagine happening in a third world hell hole in which the little people don’t matter. So a bridge falls on a few folks. big deal. But in the US, we value life and safety of all. Or we used to. Now we import third worlders to come up with grand plans to build bridges illogically and to kill people.

[EVO X]

You nailed it. Why push the limit for a pedestrian crossway?

[EVO X]

Here is an update to Florida pedestrian bridge collapse.

https://www.ntsb.gov/news/press-releases/Pages/NR20181115.aspx

[EVO X]

Here is the executive summary of the final report to released in the next few weeks.

https://www.ntsb.gov/news/events/Documents/2019-HWY18MH009-BMG-abstract.pdf

[EVO X]

Some of the links I posted no longer work. I think this is the final report.

https://www.ntsb.gov/investigations/AccidentReports/Reports/HAR1902.pdf

If this link disappears, here is a brief summary:

“Probable Cause

The National Transportation Safety Board (NTSB) determines that the probable cause of the Florida International University (FIU) pedestrian bridge collapse was the load and capacity calculation errors made by FIGG Bridge Engineers, Inc., (FIGG) in its design of the main span truss member 11/12 nodal region and connection to the bridge deck. Contributing to the collapse was the inadequate peer review performed by Louis Berger, which failed to detect the calculation errors in the bridge design. Further contributing to the collapse was the failure of the FIGG engineer of record to identify the significance of the structural cracking observed in this node before the collapse and to obtain an independent peer review of the remedial plan to address the cracking. Contributing to the severity of the collapse outcome was the failure of MCM; FIGG; Bolton, Perez and Associates Consulting Engineers; FIU; and the Florida Department of Transportation to cease bridge work when the structure cracking reached unacceptable levels and to take appropriate action to close SW 8th Street as necessary to protect public safety.”