“…The quality of the stormwater runoff may be driven by the daily traffic volume, bridge-deck area, and antecedent conditions, as some previous studies have alluded to, and (or) by atmospheric deposition from surrounding industry (Wagner and others, 2011;National Academies of Sciences, Engineering, and Medicine, 2014;Winston and others, 2015). Even though numerous studies have been conducted to analyze the effects of stormwater from highways and, to a lesser extent, from bridge decks to receiving waters nationally, no specific studies have been conducted in South Carolina at the writing of this report (Irwin and Losey, 1978;Wanielista, and others, 1980;McKenzie and Irwin, 1983;Yousef and others, 1984;Harned, 1987;Driscoll and others, 1988;Zellhoefer, 1989;Stoker, 1996;Marsalek and others, 1997;Dupuis, 2002;Smith, 2002;Granato, 2003;Malina and others, 2005;Pitt and Maestre, 2005;Smith and Granato, 2010;Wagner and others, 2011).…”