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Thomas Saad, P.E. Senior Structural Engineer Federal Highway Administration Phone: (708)283-3521.

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Presentation on theme: "Thomas Saad, P.E. Senior Structural Engineer Federal Highway Administration Phone: (708)283-3521."— Presentation transcript:

1 Thomas Saad, P.E. Senior Structural Engineer Federal Highway Administration Phone: (708)

2 Design and Analysis Tools LRFR Implementation Webinars New FHWA Design Manuals and Design Examples Design and Analysis Training Research Long-Term Bridge Performance Program (LTBPP) Policy and Regulatory Issues NBIS Update NBI Coding Guide Update NTIS Etc…

3 Topic No. 1: Implementation of the Load and Resistance Factor Rating Method, October 5, 2011 Topic No. 2: LRFD/LRFR Design and Load Rating of Culverts, November 17, 2011 Topic No. 3: LRFR Load Rating of Segmental Concrete Bridges, January 19, 2012 Topic No. 4: State-Specific LRFR Load Rating Guidelines, April 19, 2012

4 Topic No. 5: Application of Load Testing in Bridge Load Rating (1), September 20, 2012 Topic No. 6: Application of Load Testing in Bridge Load Rating (2), December 6, 2012 Topic No. 7: Application of Computer Software in Bridge Load Rating (1), February 28, 2013 Topic No. 8: Application of Computer Software in Bridge Load Rating (2), April 25, 2013 Recordings:

5 September 12, 1:00 – 3:30 pm EDT Focus on evaluation of gusset plates New gusset design/analysis provisions Gusset plate load rating methods case study Evaluating deteriorated gusset plates

6 Steel Bridge Design Handbook – Available Fatigue Repair and Retrofit Manual - Available Refined Analysis Manual – early 2014 PT Box Girder Design Manual – early 2014 FHWA PT Installation and Grouting Manual – release expected very soon Manual on Engineering Stability in Construction of Bridge Superstructures – early 2014

7 NHI Course : LRFD for Bridge Superstructures NHI Course : LRFD for Bridge Substructures and ERS NHI Course : LRFR for Highway Bridges NHI Course : LRFD Seismic Analysis and Design of Bridges NHI Course : LRFD Seismic Analysis and Design of Tunnels, Walls and other Geotechnical Features NHI Course : LRFD: Design and Analysis of Skewed and Horizontally Curved Steel Bridges

8 1 ½ day seminar (9 PDH) Overview of FHWA Seismic Retrofit Manual Develop design response spectrum identically to current LRFD Delivered in IN, IL, NY, NJ, GA, MA, TN, UT

9 Zone 1-SDC A Zone 2-SDC B Zone 3-SDC C Zone 4-SDC D

10 SITE CLASS B Zone 1-SDC A Zone 2-SDC B Zone 3-SDC C Zone 4-SDC D

11 Zone 1-SDC A Zone 2-SDC B Zone 3-SDC C Zone 4-SDC D SITE CLASS D

12 Zone 1-SDC A Zone 2-SDC B Zone 3-SDC C Zone 4-SDC D SITE CLASS E

13 Definition of Bridge Performance: Bridge Performance Encompasses How Bridges Function and Behave Under the Complex and Interrelated Factors they are Subjected to Daily: Traffic Volumes Loads De-Icing Chemicals Freeze-Thaw Cycles Environment Extreme Events Method of Design Construction Materials Age Maintenance History

14 Vision: The LTBP Program will Serve as the National Platform for Strategic Long-Term Investigation of In- Service Bridge Performance. Mission: Foster Improved Bridge Performance, Health, Stewardship, and Management Through the Analysis of Data Collected Over a 20-Year Period on a Large Representative Sample of U.S. Highway Bridges. To achieve this, the Program is Designed to Produce and Support Improved Deterioration Models, Reliable Life- Cycle Cost and Forecasting Models, Design Procedures, and Decision-Making Tools.

15 USW Impact Echo Electrical Resistivity GPR Coring

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17 Initial East Coast N/S Bridge Corridor

18 Robot Remote controlled Cameras GPS 4 NDE technologies Deployed on 24 bridges

19 USW (Modulus) IE High-Resolution Imaging

20 Progress made nationally on 20 of 23 metrics 1 metric stayed the same at 100% Satisfactory 2 metrics redefined with no comparison available Significant improvement in 5 metrics 3 frequency, scour POAs, QC/QA CY 2011PY 2013% Change Satisfactory70.5 %79.3 %8.9 % Active Improvements 29.0 %20.6 %(8.4 %) Unsatisfactory0.5 %> 0.08 %(0.42 %)

21 FHWA/AASHTO Task Force in 2011 Some metrics revised for 2012 assessments Remainder revised for current cycle Issued latest version of metrics on 4/1/13 May training for FHWA staff Risk considerations, commentary, incorporated Q&As

22 Number of Errors ,81120,2846,9674,155 Trends show results of significant efforts to reduce errors Error = bad or missing data > 60 Million pieces of data in NBI

23 Central online library of videos and resources for local agencies Each video addresses a single topic condenses complex regulations and requirements of the Federal-aid Highway Program into easy-to- understand concepts and illustrated examples Launched August 27, 2012 at the American Public Works Association (APWA) International Public Works Congress and Exposition

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25 SNPRM published in Federal Register Comments due by September 30, 2013 https://www.federalregister.gov/articles/2013/07/30/ /national-tunnel-inspection-standards#h-4 TOMIE Manual at National Tunnel Inventory and Coding Guide being developed

26 MAP-21 requires AMS for NHS bridges and pavements States document how they will do business State must define performance measures for bridges and pavements Penalties if performance not met

27 Mandated by MAP-21 Methodology, training, and qualifications for inspectors Frequency of inspections Three years to complete (October 2015)

28 Is 24 months the right interval for both of these bridges?

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30 Relate to structural or safety- related deficiencies of highway bridges Monitoring activities and corrective actions taken in response to a critical finding

31 MAP-21 mandates Procedures for annual compliance reviews Penalty for noncompliance with the NBIS Establishes timeframes States notified of noncompliance concerns by Dec 31 st 45 days to resolve or establish a PCA Implement penalty if no PCA or resolution Federal Register Notice being developed

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