Thread:61Storm/@comment-29709319-20190621035327/@comment-30339728-20191011112400

While not covered, it's a marvel - 23 miles across and I hate driving on it...

Lake Pontchartrain Bridge (New Orleans-Slidell)

This double-leaf trunnion bascule bridge with steel plate girder spans has significance as a distinctive example of the bascule type. Its significance is demonstrated by the presence of distinctive engineering and design features of the double-leaf trunnion bascule bridge type, which is characterized by two opposing leaves that rotate around trunnions, racks, and pinions for moving each span, counterweights that descend into enclosed pits, and locking mechanisms that enable the cantilevered spans to withstand live loads and remain stable when in the closed position. The structure retains integrity and continues to convey significant design features of the double-leaf trunnion bascule bridge type. This bridge is eligible for the National Register under Criterion C: Design/Engineering.