Lift Bridge Engineering Diagram - Structural Design and Operation #3631768 (License: Personal Use)

This technical illustration depicts a vertical-lift bridge, where the central span is raised vertically by cables and counterweights housed in the two tall, latticed towers. The dashed lines indicate the truss configuration of the movable deck, and the letter “W” marks the counterweight mechanisms essential for balancing the span during operation. The structure rests on concrete piers embedded in the waterway, demonstrating typical river or canal crossing design.

Commonly used in educational resources, civil engineering textbooks, or transportation infrastructure websites to explain movable bridge types; targets users researching bridge mechanics, historical engineering, or urban planning.