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Long-Term Bridge Performance Program

Program Presentation at Transportation Research Board 88th Annual Meeting

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FHWA Long-Term Bridge Performance Program

"A Flagship Initiative"

Hamid Ghasemi, Ph.D.
Program Manager
Long-Term Bridge Performance Program
Turner-Fairbank Highway Research Center
Federal Highway Administration
McLean, Virginia



Outline




Long-Term Bridge Performance Program (LTBP Program)



LTBP Program Activities (January 2006 - Present)



LTBP Program Activities (January 2006 - Present)


LTBP Program Activities (January 2006 - Present)


Moving the American Economy

Friday, May 2, 2008.

"Acting Federal Highway Administrator Jim Ray"



FHWA Launches Flagship Initiative to Collect Nationwide Data on Highway Bridges - A 20-year research effort to collect data on bridges nationwide will lead to better investment decisions on bridges


Objective

Diagram. LTBP Program Objective. The diagram depicts an arrow starting thin at the left bottom part of the diagram and widening towards the top-right. There are three circles near the tail, middle, and head of the arrow proportionate to the arrow width. The text below the first (smallest) circle near the tail states the first LTBP program objective as "Collect, document and maintain high quality, quantitative performance data." The text below the middle circle near the middle of the arrow states the second LTBP program objective as "Improved knowledge of bridge performance." The text below the last (largest) circle near the arrow head states the third LTBP program objective as "Improved asset management."


LTBP program is not intended to become a repository of vast amounts of bridge data without consideration of the value of the data in assessing bridge performance

No Data Warehouse


Anticipated Impacts of the LTBP Program


Approach


Organization Chart. LTBP Team. The chart depicts the organization of the LTBP program team. The organization of LTBP program starts by a box in the top with the FHWA program manager in TFHRC. The second box of the management team comes below the FHWA box and includes two boxes inside representing Rutgers University and PB. Rutgers University represented by Center for Advanced Infrastructure & Transportation (CAIT) includes Principal Investigator, Contract Management, Outreach / Communications, NDT / NDE, and Modelling. PB box includes Coordination, QA/QC, and Visual Inspection A small box to the right is connected with a line to Rutgers University box and includes TFHRC labs that includes BMSIL and NDT/NDE. The second level of the team includes four boxes below the management team. These boxes from left to right represent Utah State University (Utah Transportation Center) covering Western Half for Bridge Health Monitoring, Virginia Transportation Research Center (VTRC) and Virginia Tech covering Eastern Half of Bridge Health Monitoring, Siemens America for Data Infrastructure, Data Model, and Database, and Institute of Transportation Studies UC Berkeley for Life Cycle Cost Analysis and Bridge Asset Management. The third level comes below the second level and includes two boxes which are from left to right: Bridge Diagnostic Inc. for Diagnostic Testing and Instrumentation, and Advitam for Data Interface Management.


Please click for the description of the image


Systems Approach


Top-Down/Heuristic Approach


Diagram. Strategic Action Plan. The diagram shows eight small circles formed in a W-shaped path with black road line between the circles and a background of the United States map. Each circle represents a step with a symbol inside the circle representing that step. Steps start from left to right in a zigzagged way along the black line between them representing the direction. The steps from left to right along the black line are: Step 1 "Defining Bridge Performance", Step 2 "Data to be Collected", Step 3 " Data Management System", Step 4 " Design the Experimental Program", Step 5 " Data Collection", Step 6 "Data Analysis and Modeling", Step 7 "Dissemination of Findings", and finally "Program Outcome".


Diagram. Data QA/QC. The diagram shows eight small circles formed in a W-shaped path with black road line between the circles and a background of the United States map. Each circle represents a step with a symbol inside the circle representing that step. Steps start from left to right in a zigzagged way along the black line between them representing the direction. The steps from left to right along the black line are: Step 1 "Defining Bridge Performance", Step 2 "Data to be Collected", Step 3 " Data Management System", Step 4 " Design the Experimental Program", Step 5 " Data Collection", Step 6 "Data Analysis and Modeling", Step 7 "Dissemination of Findings", and finally "Program Outcome". A square is drawn under Step 3 "Data Management System" with the name of the two contractors "Advitam and Siemens" and an elliptical arrow representing the feedback between the box representing them and two boxes for the contractor of Step 5 " Data Collection" and Step 6 "Data Analysis and Modeling"


Performance, Measure, Category or Indicators

????


Bridge Performance?


Peformance Categories

All Limit States
  • Serviceability
  • Operation
  • Scour and Floods
  • Wind
  • Hurricane
  • Earthquakes
  • Overloads
  • Vessel Collisions
  • Fire
  • Fatigue
  • Terrorism

Which Performance Category is More Critical?


Picture. Five pictures for collapse of bridges


Picture. Four pictures for collapse of bridges


Picture. Four pictures for collapse of cases including the twin towers of word trade center


Challenges in Measuring Bridge Performance


Diagram. Strategic Action Plan. The diagram shows eight small circles formed in a W-shaped path with black road line between the circles and a background of the United States map. Each circle represents a step with a symbol inside the circle representing that step. Steps start from left to right in a zigzagged way along the black line between them representing the direction. The steps from left to right along the black line are: Step 1 "Defining Bridge Performance", Step 2 "Data to be Collected", Step 3 " Data Management System", Step 4 " Design the Experimental Program", Step 5 " Data Collection", Step 6 "Data Analysis and Modeling", Step 7 "Dissemination of Findings", and finally "Program Outcome".


FOCUS GROUP Meetings


FGM and Pilot Study

Map. LTBP Focus Group Meeting (FGM) and Pilot Study. GIS map of the United States showing three symbols for the states that have FGM completed with green color, the states that have FGM proposed with yellow color, and the states that have proposed pilot bridges with red boundary. FGM completed states include: NY, NJ, VA, FL, and CA.  FGM proposed states include: OH, AL, IL, MN, IA, AR, LA, TX, MT, UT, and OR.  States with proposed pilot study include: NY, NJ, VA, FL, MN, UT, and CA.

John Penrod:
Pilot Study Program manager


Diagram. LTBP Roadmap Line Diagram showing the roadmap timeline from May 2008 to December 2010. The diagram shows that Development Phase begins in May 2008 and completed in April 2009. Pilot Program begins in January 2009 and completes in April 2010. Phase I Long-term Data Collection begins in May 2010 and continues forward. Pilot Program Tasks & Objectives: Monitor a small number of bridges to determine general aspects of deterioration and factors impacting condition, verify all data collection procedures and protocols, and establishing a solid foundation for the long-term program.  Program Deliverables: Report on pilot study outcomes, Meetings/workshops with stakeholders and industry organizations. Pilot Program Final Result: Working prototype for each aspect of the program (data collection, methodologies, etc.), Clear vision and tested plan for phase I data collection.


Oversight


Outreach


Conclusions


Conclusions

Data to Information to Experience  to Knowledge to Wisdom to Decision Making


Web-Site and Contact Information

www.fhwa.dot.gov/research/tfhrc/programs/infrastructure/structures/ltbp/

ltbp@dot.gov


Thank You!


 

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