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Steel Bridges: Design of Steel Stringer Bridges

COURSE NO: S03-029
COURSE PROVIDER: Donald Parnell, P.E.
Steel Bridges: Design of Steel Stringer Bridges
Course Highlights

This online engineering PDH course provides basic information on the design of steel stringer bridges.


Once a bridge type is selected, the designer then advances to the detailed design of the bridge. Since the vast majority of steel bridges designed today are steel girders made composite with concrete bridge decks, this course will cover many detailed issues that are encountered when designing a composite deck girder system. This course addresses the design of welded plate girders. However, many of the principles presented are also applicable to the design of rolled beam bridges.


A stringer bridge is a type of bridge structure that consists of a series of closely spaced parallel beams, called stringers, which support a deck or roadway. The stringers are typically made of steel or reinforced concrete and are supported by piers or abutments at each end. The deck or roadway is placed on top of the stringers and is typically made of concrete, asphalt, or wood. Stringer bridges are commonly used for shorter spans and are relatively easy to construct and maintain.


This 3 PDH online course is applicable to structural engineers who are interested in obtaining the needed information to make knowledgeable decisions regarding the selection, design, fabrication, and construction of steel bridges.
Learning Objectives

This PE continuing education course is intended to provide you with the following specific knowledge and skills:

  • Familiarizing with cross frame diaphragm selection including spacing, orientation and frame type selection
  • Understanding girder design including selection of analysis methods, girder depth optimization, girder plate transition, field place location, girder web design, material selection
  • Learning about superstructure cost assessment, substructure cost assessment, access cost assessment
  • Understanding basic framing development in order to design an economical bridge
  • Learning about the maintenance and rehabilitation of stringer bridges
  • Familiarizing with the inspection and evaluation of stringer bridges
Course Document
In this professional engineering CEU course, you need to review the course document titled, "Steel Bridges: Design of Steel Stringer Bridges”, which is based on the U.S. Department of Transportation document “Stringer Bridges: Making the Right Choices”, publication no. FHWA-HIF-16-002 - Vol. 6.
To view, print and study the course document, please click on the following link(s):
Course Quiz
Once you complete your course review, you need to take a multiple-choice quiz consisting of fifteen (15) questions to earn 3 PDH credits. The quiz will be based on the entire document.
The minimum passing score is 70%. There is no time limit on the quiz, and you can take it multiple times until you pass at no additional cost.
Certificate of Completion

Upon successful completion of the quiz, print your Certificate of Completion instantly. (Note: if you are paying by check or money order, you will be able to print it after we receive your payment.) For your convenience, we will also email it to you. Please note that you can log in to your account at any time to access and print your Certificate of Completion.

To buy the course and take the quiz, please click on: