Pedestrian Bridge Collapse - Florida International University
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csb
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csb
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DrZoidberWoop
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I can't help but find it grimly humorous that the 2019 ASCE/SEI Structural Congress will have an 11AM session titled "Accelerated Bridge Construction in High Seismic Areas," where both moderators and 2 of 4 presenters are from FIU. It looks like the session has ZERO professional engineers and 5 or 6 PhDs. This speaks volumes to me about the current state of affairs. Irony I suppose. Here is a link:
https://www.eventscribe.com/2019/STCONG19/agenda.asp?pfp=FullSchedule
https://www.eventscribe.com/2019/STCONG19/agenda.asp?pfp=FullSchedule
Road Guy
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not sure if this referencing a "final" report. This mentions one from OSHA, which I assume is just involved due to worker safety and that some agency like NTSB would make the final review? Or does OSHA handle this because it was under construction?
https://www.msn.com/en-us/news/us/fiu-bridge-collapse-engineer-ignored-warning-signs-hours-before/ar-AACLWea?li=BBnb7Kz
https://www.msn.com/en-us/news/us/fiu-bridge-collapse-engineer-ignored-warning-signs-hours-before/ar-AACLWea?li=BBnb7Kz
I suspect the EoR is going to see jail time, and possibly other members of the firm he covered for. If you read some of the other articles, his phone that was subpoena'd that allegedly had photos and related text messages was damaged after "his wife washed the phone accidentally." Their legal council has been doctoring meeting minutes to make statements sound wishy-washy, etc. It does not paint the firm or EoR in a good light.
I was never in the a formal design environment so just wondering if there's any significance that the EOR's initials are not in the "designed by" and "checked by" boxes. Could he be one of those principals that only stamp designs produced by subordinates without thoroughly checking them? I heard those do exist.
conclusions copy pasted from the report:
TL;DR: EOR is in trouble and main at fault - Peer Reviewer didn't do their full job, Special Inspector should have said something, Contractor should have exercised better judgement.
As a result of the investigation, OES concludes that:
1. FIGG Bridge Engineers(FIGG),the Engineer of Record (EOR)failed to recognize that the bridge was in danger of collapsing when he inspected it hours before the collapse. The concrete truss had developed numerous wide and deep structural cracks jeopardizing the integrity of the bridge. The EOR should have immediately instructed that the bridge be shored at appropriate locations and SW 8th Street be closed. At the time of collapse,the post-tensioning bars were being re-tensioned at the specific instructions of the EOR.
2. The bridge had structural design deficiencies that contributed to the collapse during construction stage III.The cracks on the bridge occurred due to deficient structural design.
3. The morning of the incident, EOR held a meeting with project participants after evaluating the cracks over the course of the previous two days. At that meeting, the EOR acknowledged that his computations could not replicate the cracks and therefore, he did not know why the cracks were occurring. The Construction Engineer and Inspector(CEI) of the project advised the EOR at this meeting that the cracks were lengthening daily. Despite these admissions and the knowledge that the cracks were growing in size, EOR stated more than once that the cracks did not present any safety concerns.
4. The magnitude of the cracks warranted that SW 8th Street be immediately closed,and the concrete truss be shored and supported at multiple intermediate locations to reduce the loads in the north diagonal and the node until final evaluations were done and remedial measures implemented.
5. Networking Engineering Services, Inc. dba Bolton Perez and Associates, Inc.(BPA) was retained by FIU to be the Construction Engineer and Inspector(CEI) of the project. BPA failed to classify the cracks,which were structural in nature,in accordance with the FDOT requirements. BPA, as a CEI, was expected to exercise its own independent professional judgement in accordance with their contract with FIU and Florida Department of Transportation (FDOT)requirements. With intimate knowledge of extensive cracking on the bridge, BPA failed to recognize that the bridge was in danger of collapsing, and did not recommend to FIU, MCM or others to close the street and shore the bridge, regardless of the opinion held by the EOR.
6 .Munilla Construction Management, Inc.(MCM), the design-build contractor, was aware that the cracks were “getting larger” as reported by MCM superintendent and quality control personnel on March 12 and 14, 2018. On March 13, 2018, EOR stated in an email to MCM, among the list of facts, that “since Saturday (March 10, 2018), MCM has been monitoring the cracks and they have not grown in size.” MCM should have immediately informed EOR on March 14, 2018 that this assumption was not valid. Despite this oversight on the part of MCM, the EOR was provided with photographs and measurements of the cracks in the days leading up to the collapse and was specifically informed by BPA during the morning meeting on March 15, 2018 that the cracks were lengthening.
7. MCM, the design-build contractor, deferred to the decision of EOR and failed to exercise its own independent professional judgement, as a constructor of the bridge, to close the traffic on SW 8th Street until the cause of the cracks were conclusively determined by EOR and peer reviewed. MCM had extensive construction experience in concrete structures and had intimate knowledge of the magnitude of cracks which were growing in size daily. MCM’s deference to EOR in light of the conclusion No. 6 above, and failure to exercise their own independent judgment with regard to implementing necessary safety measures were unreasonable.
8. The evaluations of the cracks by the EOR, and his recommendation to re-tension the post-tensioning bars of diagonal 11,were not included in the original design and therefore should have been subject to peer review.
9. The consultant retained by EOR to conduct independent peer review of the EOR’s design, as per FDOT requirements, did not check the structural integrity of the bridge under different construction stages, a violation of the FDOT requirements. The independent check was performed only under the final design stage when all segments of the bridge were constructed and completed.
Note: This page has been amended by deleting the following sentence from the June 2019 report:“EOR failed to provide construction documents to Louis Berger at 30%, 60% and 90% of completion of construction documents, in accordance with the FDOT requirements.”
TL;DR: EOR is in trouble and main at fault - Peer Reviewer didn't do their full job, Special Inspector should have said something, Contractor should have exercised better judgement.
As a result of the investigation, OES concludes that:
1. FIGG Bridge Engineers(FIGG),the Engineer of Record (EOR)failed to recognize that the bridge was in danger of collapsing when he inspected it hours before the collapse. The concrete truss had developed numerous wide and deep structural cracks jeopardizing the integrity of the bridge. The EOR should have immediately instructed that the bridge be shored at appropriate locations and SW 8th Street be closed. At the time of collapse,the post-tensioning bars were being re-tensioned at the specific instructions of the EOR.
2. The bridge had structural design deficiencies that contributed to the collapse during construction stage III.The cracks on the bridge occurred due to deficient structural design.
3. The morning of the incident, EOR held a meeting with project participants after evaluating the cracks over the course of the previous two days. At that meeting, the EOR acknowledged that his computations could not replicate the cracks and therefore, he did not know why the cracks were occurring. The Construction Engineer and Inspector(CEI) of the project advised the EOR at this meeting that the cracks were lengthening daily. Despite these admissions and the knowledge that the cracks were growing in size, EOR stated more than once that the cracks did not present any safety concerns.
4. The magnitude of the cracks warranted that SW 8th Street be immediately closed,and the concrete truss be shored and supported at multiple intermediate locations to reduce the loads in the north diagonal and the node until final evaluations were done and remedial measures implemented.
5. Networking Engineering Services, Inc. dba Bolton Perez and Associates, Inc.(BPA) was retained by FIU to be the Construction Engineer and Inspector(CEI) of the project. BPA failed to classify the cracks,which were structural in nature,in accordance with the FDOT requirements. BPA, as a CEI, was expected to exercise its own independent professional judgement in accordance with their contract with FIU and Florida Department of Transportation (FDOT)requirements. With intimate knowledge of extensive cracking on the bridge, BPA failed to recognize that the bridge was in danger of collapsing, and did not recommend to FIU, MCM or others to close the street and shore the bridge, regardless of the opinion held by the EOR.
6 .Munilla Construction Management, Inc.(MCM), the design-build contractor, was aware that the cracks were “getting larger” as reported by MCM superintendent and quality control personnel on March 12 and 14, 2018. On March 13, 2018, EOR stated in an email to MCM, among the list of facts, that “since Saturday (March 10, 2018), MCM has been monitoring the cracks and they have not grown in size.” MCM should have immediately informed EOR on March 14, 2018 that this assumption was not valid. Despite this oversight on the part of MCM, the EOR was provided with photographs and measurements of the cracks in the days leading up to the collapse and was specifically informed by BPA during the morning meeting on March 15, 2018 that the cracks were lengthening.
7. MCM, the design-build contractor, deferred to the decision of EOR and failed to exercise its own independent professional judgement, as a constructor of the bridge, to close the traffic on SW 8th Street until the cause of the cracks were conclusively determined by EOR and peer reviewed. MCM had extensive construction experience in concrete structures and had intimate knowledge of the magnitude of cracks which were growing in size daily. MCM’s deference to EOR in light of the conclusion No. 6 above, and failure to exercise their own independent judgment with regard to implementing necessary safety measures were unreasonable.
8. The evaluations of the cracks by the EOR, and his recommendation to re-tension the post-tensioning bars of diagonal 11,were not included in the original design and therefore should have been subject to peer review.
9. The consultant retained by EOR to conduct independent peer review of the EOR’s design, as per FDOT requirements, did not check the structural integrity of the bridge under different construction stages, a violation of the FDOT requirements. The independent check was performed only under the final design stage when all segments of the bridge were constructed and completed.
Note: This page has been amended by deleting the following sentence from the June 2019 report:“EOR failed to provide construction documents to Louis Berger at 30%, 60% and 90% of completion of construction documents, in accordance with the FDOT requirements.”
csb
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RBHeadge PE
Nucflash
I'm not sure that there are *that* many people with criminal charges on the way. I could see the EOR could see some involuntary manslaughter, obstructions, and maybe conspiracy charges, not sure about others at the firm?
Road Guy
Well-known member
& all could have been avoided with a standard ugly Bulb T pedestrian bridge - but that wouldn't have been "stylish" although it sure as **** would have been cheaper and not killed anyone..
But are there really that many cases of engineers going to jail over a flaw? There is a difference in an intentional error and a "mistake". There is going to be enough blame to go around between the Owner (The College), FDOT, Contractor, Engineer, to bore the hell out of a jury. But on the Design Builds I have been on the engineer is very much aware of everything going on with issues like cracking and settlement. The contractor (in a DB environment) will usually keep the owner in the dark for as long as possible if there are issue though.
But are there really that many cases of engineers going to jail over a flaw? There is a difference in an intentional error and a "mistake". There is going to be enough blame to go around between the Owner (The College), FDOT, Contractor, Engineer, to bore the hell out of a jury. But on the Design Builds I have been on the engineer is very much aware of everything going on with issues like cracking and settlement. The contractor (in a DB environment) will usually keep the owner in the dark for as long as possible if there are issue though.
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Road Guy
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A CDOT old timer was telling me about a bridge beam which failed across the interstate years ago and killed several motorists. The beams cracked days after setting and eventually failed- the CDOT Resident Engineer lost his license for 2 years. But the real culprit was the beam manufacturer- but the owner screwed up by not acting fast enough-
Dean Agnostic
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What if the EOR has never been convicted of a felony and has never been indicted by a grand Jury, or has no criminal record, do you think there’s still jail time??? This is scary.
Dean Agnostic
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Does anyone know if there are criminal charges filed? If so, please send me the link of the article. This is scary 
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