My Training My Profile Checkoutshopping cart
Home Contact Help
Search for a Course
browse courses
Email Updates
Get the latest NHI training news.
Connect with us
Mail Facebook Twitter Youtube Flicker
Find Training
Browse Upcoming Sessions

Course Search

Search for courses based on delivery type, program area, or topic below, or find upcoming trainings in your state or territory. For more information on trainings from the National Highway Institute, contact us.

Course Description

Stream Stability and Scour at Highway Bridges

PROGRAM AREA: Hydraulics
Instructor-led Training (ILT)Instructor-led Training (ILT)
Calendar Year
Host Price
3 Days
2 Units
$800 Per Participant

TRAINING LEVEL: Intermediate

CLASS SIZE: Minimum: 20 Maximum: 30


The National Highway Institute's (NHI) 3-day Stream Stability and Scour at Highway Bridges course provides participants with comprehensive training in the prevention of hydraulic-related bridge failures. Course participants will receive training in conducting a stream stability classification and qualitative analysis of stream response and make estimates of scour at a bridge opening.

Material for the course comes primarily from two Hydraulic Engineering Circulars (HEC), "Evaluating Scour at Bridges" (HEC-18), 5th Edition (2012), and "Stream Stability at Highway Structures" (HEC-20), 4th Edition (2012). The effects of stream instability, scour, erosion, and stream aggradation and degradation are covered. Quantitative techniques are provided for estimating long-term degradation and for calculating the magnitude of contraction scour in a bridge opening. Procedures for estimating local scour at bridge piers and abutments for simple and complex substructures are also provided. A comprehensive workshop integrates qualitative analysis and analytical techniques to determine the need for a Scour Plan of Action for correcting stream instability and scour problems. For this 3-day course, the host agency will need to select 3 optional topics (out of 8 possible topics). Course instructors will contact the host prior to the course to complete a pre-course questionnaire, determine optional topics to be taught, and discuss the course schedule.

This comprehensive training provides preventive techniques for identifying, analyzing, and calculating various hydraulic factors that impact bridge stability. Public and private sector engineers responsible for maintaining the integrity of highway bridges will find it invaluable.

Prior to the beginning of the course, participants are strongly encouraged to enroll in the following Web-based training (WBT) courses: 135091 Basic Hydraulic Principles Review, 135086 Stream Stability Factors and Concepts, and 135087 Scour at Highway Bridges: Concepts and Definitions. Mastery of the concepts covered in these WBTs will enhance participation in the Instructor-led training.


Upon completion of the course, participants will be able to:

  • Identify indicators of stream instability that can threaten bridges
  • Identify stream types and their potential for instability problems
  • Describe open-channel hydraulics concepts in bridge scour and stream instability analyses
  • Define types of scour that can occur at bridge crossings
  • Describe aggradation, degradation, and contraction scour
  • Calculate contraction scour for live bed and clear water conditions
  • Describe factors that influence scour at piers
  • Calculate pier scour for three typical case studies
  • Describe the factors that influence scour at abutments
  • Describe how HEC-18, HEC-20, and HEC-23 provide analysis procedures for stream instability and bridge scour
  • Perform Level I and II analyses
  • Classify a stream using two different classification systems
  • Conduct a qualitative analysis of stream responses
  • Apply the HEC-18 scour equations to determine total scour at a bridge
  • Determine the need for a Scour Plan of Action at a scour-critical bridge


Federal, State, and local highway hydraulic, structural, and geotechnical engineers as well as bridge inspectors responsible for maintaining the integrity of highway bridges against possible hydraulic-related problems. Consultants who perform bridge engineering work are encouraged to attend.

If you have questions about this NHI training, please contact NHI at or 877.558.6873.


Start Date: 5/24/2022
End Date: 5/26/2022
Local Coordinator: Kathleen Sisson (401) 563-4144
No Public Seats Available
Please contact the Local Coordinator to enroll in this session.
3 FHWA Seats
Start Date: 6/07/2022
End Date: 6/09/2022
Location: DOVER, DE
Local Coordinator: Earl Lee (302) 831-6241
No Public Seats Available
Please contact the Local Coordinator to enroll in this session.
2 FHWA Seats
Start Date: 9/13/2022
End Date: 9/15/2022
Location: COLUMBUS, OH
Local Coordinator: Victoria Beale (614) 466-3129
18 Public Seats
$800 Per Participant
3 FHWA Seats
Start Date: 11/15/2022
End Date: 11/17/2022
Local Coordinator: Amy Young (217) 782-4731
No Public Seats Available
Please contact the Local Coordinator to enroll in this session.
3 FHWA Seats
Start Date: 11/29/2022
End Date: 12/01/2022
Local Coordinator: Amy Young (217) 782-4731
No Public Seats Available
Please contact the Local Coordinator to enroll in this session.
3 FHWA Seats

Sign up for session alerts to receive email alerts when sessions of this course are scheduled.

Host this Course

The National Highway Institute (NHI) has been accredited as an Accredited Provider by the International Accreditation for Continuing Education and Training (IACET). In obtaining this accreditation, NHI has demonstrated that it complies with the ANSI/IACET Standard which is recognized internationally as a standard of good practice. As a result of their Accredited Provider status, NHI is authorized to offer IACET CEUs for its programs that qualify under the ANSI/IACET Standard.


You are about to access, a secure service provided by the United States Department of the Treasury.

As of March 15, 2017, to access users must use:

  1. Internet Explorer version 11 or higher
  2. Google Chrome version 30 or higher
  3. Mozilla Firefox version 27 or higher
  4. Apple Safari version 7 or higher

For questions, concerns, technical issues or for more information, please contact Customer Service at:

800-624-1373 (Toll free, Option #2)

216-579-2112 (Option #2)

Hours are Monday - Friday, 7:00 AM - 7:00 PM ET.

To pay by check, mail a copy of your invoice and a check made payable to the Federal Highway Administration to:
6500 S. MacArthur Blvd
Oklahoma City, OK 73169


You are now leaving the National Highway Institute's Web Site

You are about to access

Thank you for visiting.

You are about to access a link outside of the Federal Highway Administration (FHWA), U.S. Department of Transportation (DOT). Our Web sites have many links to other organizations, including educational institutions and non-profit associations. Please note: While links to Web sites outside of DOT are offered for your convenience in accessing transportation-related information, please be aware that when you exit DOT Web sites, the privacy policy, including tracking technology, computer security, intellectual property protection and Section 508 of the Rehabilitation Act (accessibility requirements) no longer apply. In addition, DOT cannot attest to the accuracy, relevancy, timeliness or completeness of information provided by linked sites. Linking to a Web site does not constitute an endorsement by DOT or any of its employees of the sponsors of the site or the products presented on the site. For more information, please view DOT's Web site linking policy. To get back to the page you were previously viewing, click your browser's "Back" button.