The Sunset Limited: Huey P. Long Bridge into Southeast Louisiana
The Huey P. Long Bridge is a cantilevered steel through-truss bridge over the Mississippi River that opened in December of 1935. It was originally built to carry two rail tracks and four (narrow) lanes of highway traffic. An expansion to six standard traffic lanes with shoulders was almost complete when I visited in 2013. The rail portion is especially impressive with long approaches that limit the grade to 1.25% but extend the total length to almost 23,000 feet in order to reach 135 above mean high water.