He also said DDIs can be built faster and for less money. The $4.6 million reconfiguration is a fraction of a major bridge rebuild, which could cost $100 million or more.
The design is the first of its kind in Georgia and the seventh in the country, officials say. The concept was first introduced in Missouri in 2009, with others following in Utah, Tennessee and Louisiana.
Local business and government officials are also pitching DDIs at I-85 and Jimmy Carter Boulevard and I-85 and Pleasant Hill Road in Gwinnett County, and at I-75 and Wade Green Road in Cobb County.