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

Culvert Design

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 Culvert Design course provides participants with an in-depth, hands-on understanding of how to hydraulically size and design a highway culvert. The course covers a range of design topics, including allowable headwater at the inlet, permissible outlet velocity, energy dissipation measures, aquatic organism passage, mechanisms of culvert failures, and repair and rehabilitation options.

Material for this 3-day course is primarily derived from the Hydraulic Design Series No. 5 (HDS 5), Hydraulic Design of Highway Culverts textbook, which is provided to participants. Additional references used throughout this course include Hydraulic Engineering Circular No. 14 (HEC-14); Hydraulic Design of Energy Dissipators for Culverts and Channels; HEC-26, Culvert Design for Aquatic Organism Passage; and HEC-9, Debris Control Structures, Evaluation, and Countermeasures. Course topics include culvert design principles and procedures and debris control structures. Throughout the course, participants engage in a number of workshops where problems are completed, both long-hand and with a computer using the FHWA HY-8 Culvert Hydraulic Analysis and Design Program. Additionally, a portable hydraulic flume is set up in the classroom for the participants to observe hydraulic principles associated with various culvert configurations, aquatic organism passage features, and culvert linings.

At the end of this course, participants will be able to apply fundamental engineering concepts, methods, and the HY-8 computer program to analyze and design culvert crossings meeting a variety of hydraulic and environmental design criteria.

Prior to taking this course, participants are strongly encouraged to enroll in the Web-based training (WBT) entitled, 135091 Basic Hydraulic Principles Review. Mastery of the concepts covered in this WBT is important to successful completion of the Instructor-led training.


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

  • Justify the importance of culvert design
  • Explain the overall culvert design process
  • Summarize basic hydraulic concepts
  • Discuss factors influencing hydraulic performance and design of culverts
  • Explain how to calculate culvert outlet velocity
  • Apply nomographs and computer methods to design a roadway culvert
  • Design culverts that meet aquatic organism passage (AOP) requirements
  • Assess impacts of repair and rehabilitation of culverts on hydraulic performance
  • Design energy dissipator and debris control structures for culverts
  • Design culverts for various situations
  • Discuss culvert failures and how they can be prevented


This intermediate-level training course is intended for hydraulic engineers, transportation engineers, and highway designers involved with roadway drainage and culvert design. Environmental scientists with an interest in aquatic organism passage may also benefit from participation in this course.

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


Participants should have some drainage design experience or successful completion of either a) college-level fluid mechanics coursework or b) Introduction to Highway Hydraulics (FHWA-NHI-135065).

Prior to taking this course, participants are strongly encouraged to enroll in the Web-based training (WBT) entitled, NHI 135091 "Basic Hydraulic Principles Review." Mastery of the concepts covered in this WBT is important to successful completion of the Instructor-led training.


Start Date: 5/24/2022
End Date: 5/26/2022
Local Coordinator: Stephen Atkinson 15737516591
No Public Seats Available
Please contact the Local Coordinator to enroll in this session.
3 FHWA Seats
Start Date: 6/28/2022
End Date: 6/30/2022
Location: CONCORD, NH
Local Coordinator: Paula Nash (603) 271-8025
4 Public Seats
$800 Per Participant
3 FHWA Seats
Start Date: 7/12/2022
End Date: 7/14/2022
Local Coordinator: Anna Bosin 90726906208
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.