Load Rating
- Load Rating Policy and Guidance
- Load Rating of Specialized Hauling Vehicles Q&As (.pdf, 1 mb)
- Assigned Load Ratings (09/28/11)
- America's Surface Transportation Act (FAST Act) Truck Size and Weight Provisions Guidance (2/24/2016)
Research and Publications
- NCHRP 12-28/Report 301 - Load Capacity Evaluation of Existing Bridges (1989) Out of print. A photocopy of this document can be purchased from the TRB Publications Sales Office.
- NCHRP 12-46/Report 454 - Calibration of Load Factors for LRFR Bridge Evaluation (2001) (.pdf)
- NCHRP 12-46 Web Document - Manual for Condition Evaluation and Load Rating of Highway Bridges Using Load and Resistance Factor Philosophy (2001) (.pdf)
- NCHRP 20-07 (Task 122) - Load Rating by Load and Resistance Factor Evaluation Method (2005) (.pdf)
- NCHRP 20-05 (Topic 36-01)/Synthesis 359 - Bridge Rating Practices and Policies for Overweight Vehicles (2006) (.pdf)
- NCHRP 12-63/Report 575 - Legal Truck Loads and AASHTO Legal Loads for Posting (2006) (.pdf)
- NCHRP 12-78/Report 700 - A Comparison of AASHTO Bridge Load Rating Methods (2011) (.pdf)
- NCHRP 20-07 (Task 285) - Recalibration of LRFR Live Load Factors in the AASHTO Manual for Bridge Evaluation (2011) (.pdf)
- NCHRP 20-05 (Topic 44-15)/Synthesis 453 - State Bridge Load Posting Processes and Practices (2014) (.pdf)
- NCHRP 20-68A, Scan 12-01, US Domestic Scan - Advances in State DOT Superload Permit Processes and Practices (2014) (.pdf)
- NCHRP 15-84 (Active)- Proposed Modifications to AASHTO Culvert Load Rating Specifications (2018)
- NCHRP 12-110 (Active) - Proposed New AASHTO Load Rating Provisions for Implements of Husbandry (2019)
Training Courses
- FHWA-NHI-130092: Fundamentals of LRFR and Applications of LRFR for Bridge Superstructures
- FHWA-NHI-130092A: Load and Resistance Factor Rating for Highway Bridges
- FHWA-NHI-130092B: Fundamentals of LRFR and Applications of LRFR for Bridge Superstructures
Events
Recorded Webinars
Registration is required. You can register for an account at https://connectdot.connectsolutions.com/lrfrreg/event/registration.html.
- Webinar No. 1: Implementation of the Load and Resistance Factor Rating Method (10/05/2011)
- Webinar No. 2: LRFD/LRFR Design and Load Rating of Culverts (11/17/2011)
- Webinar No. 3: LRFR Load Rating of Segmental Concrete Bridges (01/19/2012)
- Webinar No. 4: State-Specific LRFR Load Rating Guidelines (04/19/2012)
- Webinar No. 5: Application of Load Testing in Bridge Load Rating (1) (09/20/2012)
- Webinar No. 6: Application of Load Testing in Bridge Load Rating (2) (12/06/2012)
- Webinar No. 7: Application of Computer Software in Bridge Load Rating (1) (02/28/2013)
- Webinar No. 8: Application of Computer Software in Bridge Load Rating (2) (04/25/2013)
- Webinar No. 9: Load Rating of Steel Truss Bridges (1) (09/12/2013)
- Webinar No. 10: Load Rating of Steel Truss Bridges (2) (12/17/2013)
- Webinar No. 11: Load Rating and Posting for Specialized Hauling Vehicles (03/12/2014)
- Webinar No. 12: A Comparison of AASHTO Bridge Load Rating Methods (05/29/2014)
- Webinar No. 13: Bridge Load Rating for Overweight Load Permitting (10/20/2014)
- Webinar No. 14: Bridge Load Rating for Overweight Load Permitting - State's Practice (1) (12/18/2014)
- Webinar No. 15: Bridge Load Rating for Overweight Load Permitting - State's Practice (2) (03/25/2015)
- Webinar No. 16: Bridge Load Rating for Overweight Load Permitting - State's Practice (3) (05/19/2015)
- Webinar No. 17: Federal Bridge Formula Weights and State-Specific Legal Loads (10/21/2015)
- Webinar No. 18: Bridge Load Rating and Posting for State-Specific Legal Loads (1) (02/24/2016)
- Webinar No. 19: Load Rating of Gusset Plates