ASPIRE Spring 09 - Aspire - The Concrete Bridge Magazine

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Lawson, Corral and Sullivan 2007 Concrete Bridge Conference Figure 13: Relief Pattern on Back Face of Barrier The pier columns received a treatment of stain and sand-blasted patterns, as Figure 14 shows. The stain on each column extends up to the 100-year storm elevation in order to suggest the abrasive and eroding capability of the floods over time. Figure 14: Stain and Pattern on Columns (Constructed Photo not available yet) CONCLUSIONS From charettes to construction, design of the Cotton Lane Bridge over the Gila River in Goodyear, Arizona, balanced the stakeholders’ need for an attractive, functional, and pedestrian-friendly bridge with their concerns about environmental context and sensitivity. The collaborative nature of the conceptual design expedited the design process. Such concern for preservation of the local landscape influenced designers to use specific colors, materials, and textures, while the awareness of the Gila’s River environment and inhabitants shaped the bridge’s form. Above all, the versatility of precast concrete, from the modified exterior girders to the curved corbels at the alcoves, enabled and provided for a more cost efficient, environmentally friendly, quickly constructed and unique bridge. 10
Lawson, Corral and Sullivan 2007 Concrete Bridge Conference REFERENCES 1. Hanks, Kurt, “Rapid Viz, Third Edition, A New Method for the Rapid Visualization of Ideas”, William Kaufmann Inc., 2006. 2. AASHTO 2004 LRFD Bridge Design Specifications, Customary U.S. Units, 3rd Edition, American Association of State Highway and Transportation Officials, Washington, D.C. 11
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