May 31, 2023 | WEBINAR: Learning from the Sixth Street Viaduct Project
The original 6th Street Viaduct was a transformative landmark in Los Angeles constructed in 1932. Concrete elements of the 3,500–foot long viaduct cracked and deteriorated over the next 75 years as a result of an internal Alkali Silica Reaction (ASR) caused by the reactive aggregate used in the concrete. Because of this ongoing and irreversible chemical action, it was determined that replacement was necessary during seismic vulnerability studies that determined the structure was susceptible to failure during major seismic activity.
Title: Learning from the Sixth Street Viaduct Project, including the Viaduct Seismic Improvement and Park, Arts, River and Connectivity Improvements (PARC)
Moderator: Jim Grant, HNTB
Presenter: Michael Jones, HNTB
Date and time: Wednesday, May 31, 2023, 2 pm – 3 pm ET
Zoom registration link: https://us02web.zoom.us/meeting/register/tZcldempqDwtG9z9ck13VfjOlv6eoMdxkuEh
Additional geometric design, safety and functional deficiencies resulted in the decision to demolish and replace the bridge with a new 6th Street Viaduct. Presenters will discuss how the project met the following goals: