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Title:

Sixth Street Viaduct Replacement, the Visualization Journey from Preliminary Proposal to Winning the Design Competition for this Signature Los Angeles Icon

Accession Number:

01515056

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

The Sixth Street Viaduct, completed in 1932 as part of the series of significant bridges over the Los Angeles (LA) River, has been featured in several media. Unfortunately, the Sixth Street Viaduct was constructed with a poor concrete mix, resulting in concrete deteriorating due to ongoing alkali-silica reaction. The entire structure needs replacement. The City Engineer of Los Angeles and the Bureau of Engineering PM team initiated an international design competition for replacing the Sixth Street Viaduct. On April 12, 2012, Los Angeles Mayor Antonio Villaraigosa and Council member Jose Huizar announced a bridge design competition for the $190 million construction project, with three shortlisted design teams tasked to develop a design concept, requiring community presentations at neighborhood locations before announcing the winner. The Request for Quotation (RFQ) asked for an aesthetically distinctive viaduct to transform the neighborhoods, considered the public’s perception of the bridge, responded to complex project constraints, and be constructed within a fixed construction budget. The HNTB teamed up with Michael Maltzan Architecture, A.C. Martin Partners, and Dissing + Weitling Architects, and developed a winning design consisting of extraordinary concrete networked tied arches spanning the LA River, railroad tracks, industrial properties and US Hwy 101. The HNTB team proposed three sizes of arches to span the ground, the river and largest arches spanning the railroad tracks. The concrete arch design provides pedestrian access from the bridge to the ground below, consisting of new urban spaces. The visualization created for their scheme included the various renderings, plus an animation flythrough of the bridge.

Supplemental Notes:

This paper was sponsored by TRB committee AFF10 General Structures. Alternate title: Sixth Street Viaduct Replacement: Visualization Journey from Preliminary Proposal to Winning the Design Competition.

Monograph Accession #:

01503729

Report/Paper Numbers:

14-2986

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Moore, Gary Lee
Miguel, Jesse Kadekawa

Pagination:

16p

Publication Date:

2014

Conference:

Transportation Research Board 93rd Annual Meeting

Location: Washington DC
Date: 2014-1-12 to 2014-1-16
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; Photos; References

Identifier Terms:

Sixth Street Viaduct

Subject Areas:

Bridges and other structures; Highways; I24: Design of Bridges and Retaining Walls

Source Data:

Transportation Research Board Annual Meeting 2014 Paper #14-2986

Files:

TRIS, TRB, ATRI

Created Date:

Jan 27 2014 3:01PM