This animation of Arlington Memorial Bridge highlights its structural components and shows how the bridge once functioned as a draw bridge, specifically a two-leaf bascule span.  The bridge last opened in 1965.

Working from historic blueprints, I completed the 3D model in AutoCAD and 3dsMax. The final animation was produced in 3dsMax and After Effects. Animating the drive gears in Max was a fun challenge. My coworker Ashley Walker created a large portion of the initial AutoCAD model which was handed off to me for completion and animation.  

Click the image to play the animation.