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DHPA  > Community Action > National & State Registers > Bridge Structure & Styles > Lenticular (Parabolic) Bridge Lenticular (Parabolic) Bridge

Lenticular (Parabolic) Bridge
1878 - early 20th century
Drawing: Historic American Engineering Record

A Pratt with both top and bottom chords parabolically curved over their entire length.

Length: 150-400 feet (45-120 meters)

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