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New Bridges or Transportation Structures: Sixth Street Viaduct Replacement Project

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Over its 84-year life span, the Sixth Street Viaduct became a cultural icon for the City of Los Angeles, appearing in countless motion pictures, music videos, and television commercials. The presentation will explain why the viaduct was replaced and discuss functional goals of the replacement. Particular attention will be given to bridge engineering innovations, including the use of Grade 80 reinforcement; the use of multi-strand post-tensioning couplers; and the development of third-generation friction-pendulum isolation bearing to meet a new seismic isolation design methodology developed for the viaduct. Emphasis will be placed on the engineering effort to support these innovations.

Presented by Michael Jones, P.E., S.E., HNTB Corporation

  • Course will award 1.0 hours of continuing education for the live session only.
  • Each series registration is per person.
  • This will be available as a recording, with no PDH attached.

Please note: This webinar is part of the NCSEA Webinar Subscription; however, we ask that all individuals register to receive credit for the live event.

Thank you to our Sponsor!


  • Michael Jones, P.E., S.E.

    Mike Jones is a Practice Consultant with HNTB and has been in HNTB’s Southern California offices for the past 30 years. He is HNTB’s Engineer of Record for the Sixth Street Viaduct Replacement Project. He has also had the opportunity to work on other west coast complex bridges including the Tacoma Narrow Suspension Bridge in Washington; the Tilikum Cable Stayed Bridge in Portland Oregon and the Gerald Desmond Cabled-Stayed Bridge in Long Beach, California. He is a licensed civil and structural engineer in California and a Profession Engineer in Arizona, Nevada, Oregon, and Florida with over 40 years of experience.

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Webinar Cancellation

By NCSEA: If a webinar is canceled by NCSEA, all registered attendees will be notified via email. NCSEA will issue a full refund if the event cannot be rescheduled. If the event is rescheduled and a registrant can not attend on the rescheduled date, NCSEA will offer a credit in the amount of the purchase price.

By Registrant/Attendee: Cancellations must be made at least 24 hours in advance of the webinar (or the first webinar in the case of a series or bundle) and in writing via email ( with the subject line "NCSEA Webinar Cancellation" and include the following in the body of the email: Title of Webinar, Order/Invoice Number, Name of Registrant, and Reason for Cancellation. No telephone refund requests will be accepted.

If the request has been approved, NCSEA can do one of the following:
  • Refund the amount back to the original order payment method (a $25 cancellation processing fee will be assessed)
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If you are unable to attend the webinar and the cancellation deadline has passed, a recording will be available (in most cases) in the Education Portal after the webinar has concluded.
Refunds are not granted due to attendee technology issues. It is your responsibility as the webinar attendee to test your computer setup prior to the start of the webinar.

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July 11, 2024
Thu 12:00 PM CDT

Duration 1H 0M

This live web event has ended.