Huey P. Long Bridge in Louisiana is a combination railroad and highway bridge designed by the firm of Modjeski, Masters and Chase, with foundation recommendations by Dr. Karl Terzaghi. It was the first bridge to span the Mississippi River at New Orleans. Its dual-track railroad portion, with a total length of 22,995 feet, was the longest high-level railroad bridge at the time, and its 8,076-foot highway portion originally consisted of two lanes cantilevered off each side. The Historic American Engineering Record has called it "One of the great engineering accomplishments for railway and highway bridges built in the country."
