Sea Technology

DEC 2018

The industry's recognized authority for design, engineering and application of equipment and services in the global ocean community

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18 ST | December 2018 www.sea-technology.com A merica's infrastructure is crumbling. We are far too accustomed to hearing a news report about a bridge collapse, a highway buckling or other local catastrophe as one indicator of this pervasive situation. Beyond these grim anecdotal news reports, most of us understand that deteriorating infrastructure is impeding our ability to compete in the thriving global economy. That said, most have only a general notion of the extent of the infstruc- ture challenge. That is why every four years U.S. civil engineers pro- vide a comprehensive assessment of the nation's six- teen major infrastructure categories in the American Society of Civil Engineer's (ASCE) Infrastructure Report Card. Using a simple A-to-F grading system, the report card examines current infrastructure conditions and needs, assigning grades and making recommendations to raise them. Sadly, ASCE's 2017 report card assigned a D+ grade to the 16 collective U.S. infrastructure categories. A Focus on Dams In these 16 categories, America's 90,000-plus dams fared among the worst, attaining an overall grade of D. USV Versatility Bathymetric Dam Imaging for Infrastructure Safety By George Galdorisi A MANTAS USV equipped with a Teledyne RESON T20 mul- tibeam echosounder for Keokuk Dam survey.

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