FHWA Status Report - AASHTOWare Bridge Design/Rating User Group Meeting Virginia Beach, VA August 6-7, 2013

FHWA Status Report -AASHTOWare Bridge Design/Rating User Group Meeting

Virginia Beach, VAAugust 6-7, 2013

Thomas Saad, P.E.Senior Structural EngineerFederal Highway AdministrationPhone: (708)283-3521

OutlineDesign and Analysis Tools

LRFR Implementation WebinarsNew FHWA Design Manuals and Design ExamplesDesign and Analysis Training

Research Long-Term Bridge Performance Program (LTBPP)

Policy and Regulatory IssuesNBIS UpdateNBI Coding Guide UpdateNTIS Etc…

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

FHWA LRFR Webinar Series

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

FHWA LRFR Webinar Series

Recordings:http://www.fhwa.dot.gov/bridge/lrfd/

LRFR Webinar No. 9: Load Rating of Steel Truss Bridges (1)

September 12, 1:00 – 3:30 pm EDTFocus on evaluation of gusset plates

New gusset design/analysis provisionsGusset plate load rating methods case studyEvaluating deteriorated gusset plates

[email protected]

Other FHWA Design and Analysis Toolswww.fhwa.dot.gov/bridge

Steel Bridge Design Handbook – AvailableFatigue Repair and Retrofit Manual - AvailableRefined Analysis Manual – early 2014PT Box Girder Design Manual – early 2014FHWA PT Installation and Grouting Manual – release expected very soonManual on Engineering Stability in Construction of Bridge Superstructures – early 2014

FHWA/NHI Bridge Design and Analysis Courses (www.nhi.fhwa.dot.gov)

NHI Course 130081: LRFD for Bridge Superstructures

NHI Course 132082: LRFD for Bridge Substructures and ERS

NHI Course 130092: LRFR for Highway Bridges

NHI Course 130093: LRFD Seismic Analysis and Design of Bridges

NHI Course 130094: LRFD Seismic Analysis and Design of Tunnels, Walls and other Geotechnical Features

NHI Course 130095: LRFD: Design and Analysis of Skewed and Horizontally Curved Steel Bridges

FHWA Seismic Retrofit Seminar

1 ½ day seminar (9 PDH)Overview of FHWA Seismic Retrofit ManualDevelop design response spectrum identically to current LRFDDelivered in IN, IL, NY, NJ, GA, MA, TN, UT [email protected]

Zone 1-SDC “A”Zone 2-SDC “B”Zone 3-SDC “C”Zone 4-SDC “D”

Seismic Design Category (zone)(500 year Return Period)

SITE CLASS “B”

Zone 1-SDC “A”Zone 2-SDC “B”Zone 3-SDC “C”Zone 4-SDC “D”

Seismic Design Category (zone)(1000 Year Return Period)

Zone 1-SDC “A”Zone 2-SDC “B”Zone 3-SDC “C”Zone 4-SDC “D”

SITE CLASS “D”

Seismic Design Category (zone)(1000 Year Return Period)

Zone 1-SDC “A”Zone 2-SDC “B”Zone 3-SDC “C”Zone 4-SDC “D”

SITE CLASS “E”

Seismic Design Category (zone)(1000 Year Return Period)

Long-Term Bridge Performance (LTBP) Program

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

Long-Term Bridge Performance (LTBP) Program

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.

Virginia Bridge Testing

USW

Impact Echo

Electrical ResistivityGPR

Coring

Initial East Coast N/S Bridge Corridor

Long Term Bridge Performance Program

“Robot”Remote controlledCameras GPS4 NDE technologiesDeployed on 24 bridges

USW (Modulus)IE

High-ResolutionImaging

NBIS Compliance UpdateProgress made nationally on 20 of 23 metrics1 metric stayed the same at 100% Satisfactory2 metrics re defined with no comparison ‐availableSignificant improvement in 5 metrics

3 frequency, scour POAs, QC/QACY 2011 PY 2013 % Change

Satisfactory 70.5 % 79.3 % 8.9 %

Active Improvements

29.0 % 20.6 % (8.4 %)

Unsatisfactory 0.5 % > 0.08 % (0.42 %)

NBIS Compliance UpdateFHWA/AASHTO Task Force in 2011

Some metrics revised for 2012 assessmentsRemainder revised for current cycle

Issued latest version of metrics on 4/1/13

May training for FHWA staffRisk considerations, commentary, incorporated Q&As

NBI Data Quality

Number of Errors2009 2010 2011 2012

115,811 20,284 6,967 4,155

Trends show results of significant efforts to reduce errorsError = bad or missing data> 60 Million pieces of data in NBI

NBIS Video for Local Agencies

Central online library of videos and resources for local agenciesEach 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

National Tunnel Inspection Standards (NTIS)

SNPRM published in Federal RegisterComments due by September 30, 2013https://www.federalregister.gov/articles/2013/07/30/2013-17875/national-tunnel-inspection-standards#h-4TOMIE Manual at http://www.fhwa.dot.gov/bridge/National Tunnel Inventory and Coding Guide being developed

Asset Management System Primer

MAP-21 requires AMS for NHS bridges and pavements States document how they will do businessState must define performance measures for bridges and pavementsPenalties if performance not methttp://youtu.be/OGiJeUGI4kI

NBIS Regulations Update

Mandated by MAP-21 Methodology, training, and qualifications for inspectorsFrequency of inspections

Three years to complete (October 2015)

NBIS UpdateRisk-based inspection intervals

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

NBIS UpdateProcedure for National Certification of Inspectors

NBIS UpdateProcedures for Reporting “Critical Findings”

Relate to structural or safety- related deficiencies of highway bridges

Monitoring activities and corrective actions taken in response to a critical finding

Compliance Oversight and Penalty Procedures

MAP-21 mandatesProcedures for annual compliance reviews Penalty for noncompliance with the NBIS

Establishes timeframesStates notified of noncompliance concerns by Dec 31st

45 days to resolve or establish a PCAImplement penalty if no PCA or resolution

Federal Register Notice being developed

Thank you!