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Material Usage and Condition of Existing Bridges in the U.S

Data on the market share of the four major bridge construction materials used in the US (reinforced concrete, prestressed concrete, structural steel, and timber) are summarized in this report. All bridges carrying public roadways are considered. Data are extracted from the National Bridge Inventory (NBI) as of December 2003. | Material Usage and Condition of Existing Bridges in the U.S. Based on NBI Data as of December 2003 Prepared by Shri Bhide Program Manager, Bridges December 2004 Cover photos: Top left: IMG47095; Bottom left: IMG48877; Top right: IMG12124; Bottom right: Graph of bridges built, reference: 2003 NBI Data. This document is intended SOLELY for use by PORFESSIONAL PERSONNEL who are competent to evaluate the significance and limitations of the information provided herein, and who will accept total responsibility for the application of this information. The Portland Cement Association DISCLAIMS any and all RESPONSIBILITY and LIABILITY for the accuracy of the application of the information contained in this publication to the full extent permitted by law. TABLE OF CONTENTS Abstract . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 The National Bridge Inventory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Data Used in this Report. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Bridge Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Limitations of Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Overview of Data Presented in Appendix A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Observations on Market Share and Bridge Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Appendix A: Summary of Market Share and Bridge