For over 80 years, the U.S. 21 Harbor River Bridge was the only way thousands of residents, workers and tourists could access a string of three barrier islands on the South Carolina coast. Unfortunately, the low swing-span bridge was deteriorating and sometimes would not close, stranding motorists for hours. As a result, SCDOT created a design-build delivery plan that kept traffic moving throughout construction by using barges to create an access road across the salt marsh and open water. In addition, SCDOT completed a robust assessment to ensure the project included participation in SCDOT’s Disadvantaged Business Enterprises Program. The new $70 million Harbor Island Bridge is a high-level crossing, so vessels can now pass under the bridge without interruption.