Revisiting Redundancy of Steel Bridges

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Webinar On-Demand
Sponsored by Nucor Construction Solutions
Presented by Dr. Jason B. Lloyd, PhD, PE

Learning Objectives:

  1. Identify key changes to the NBIS as they relate to the redundancy of steel bridges.
  2. Explain the essential components of risk.
  3. Describe the basic concepts of two modes of redundancy recently adopted into the new NBIS.
  4. Determine the differences in the traditional method of bridge inspection as compared to a risk-based inspection program.


1 PDH*
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Purpose statement:

This course will review how the changes to bridge inspection programs and accepted methods of steel bridge redundancy brought about by the release of NBIS can impact your projects.

If you are like most in the steel bridge community, you understand the guidelines of bridge design and construction. But did you know that this year, the Federal Highway Administration released a new National Bridge Inspection Standard (NBIS) with significant changes to bridge inspection programs and accepted methods of steel bridge redundancy?

This webinar will review how the changes can impact your projects. It will also explore the analytical framework needed to revisit the way we evaluate redundancy in steel bridges by considering system level and member level redundancy for new or existing bridges.


Photo courtesy of Nucor Corporation


Dr. Jason B. Lloyd, PhD, PE, is the Manager of Bridge & Infrastructure Solutions at Nucor Construction Solutions Services partnering with fabricators, owners, designers, and erectors for project success. He is a licensed Professional Engineer in the State of Indiana. He has over 17 years of professional experience in marketing, training, and public speaking, large-scale research, infrastructure testing, and monitoring, and contract and construction management. He attained his M.S. and Ph.D. Civil Engineering from Purdue University. Prior to Nucor, Jason worked at the National Steel Bridge Alliance (NSBA) where he promoted the design and construction of steel bridges through marketing, education, and technical collaboration efforts. Preceding his time at the NSBA, Jason spent seven years as a research engineer at Purdue University where he specialized in field testing and remote long-term and short-term monitoring of structures, data acquisition over remote communications, fatigue analysis of existing structures, fracture mechanics, large scale fatigue research, bridge inspection research, steel bridge repair and retrofit, and steel bridge redundancy. Jason currently serves on several technical committees, research technical advisory groups, and technical collaborations, and is a proud former U.S. Navy Seabee officer.


Nucor Construction Solutions Nucor and its affiliates are manufacturers of steel and steel products, with operating facilities in the United States, Canada and Mexico. Products produced include: carbon and alloy steel -- in bars, beams, sheet and plate; hollow structural section tubing; electrical conduit; steel racking; steel piling; steel joists and joist girders; steel deck; fabricated concrete reinforcing steel; cold finished steel; precision castings; steel fasteners; metal building systems; insulated metal panels; steel grating; and wire and wire mesh. Nucor, through The David J. Joseph Company, also brokers ferrous and nonferrous metals, pig iron and hot briquetted iron / direct reduced iron; supplies ferro-alloys; and processes ferrous and nonferrous scrap. Nucor is North America's largest recycler.


Originally published in September 2022