The bascule bridge, rolling bascule bridge, drawbridge, retractable bridge, folding bridge, swing bridge, tilt bridge, table bridge (pneumatic), vertical-lift bridge, and transporter bridge are all types of movable bridges with different mechanisms that enable passage over waterways.
Now, see these bridges made with LEGO in this almost 10-minute-long movable LEGO Bridges video. Each type is tested with minifig-driven boats and trucks. There’s also side-by-side footage of all the bridges at the very end.
Previous LEGO engineering from BEC on TKSST:
• Modifying a climbing LEGO car design for 15 obstacles
• Two 100 Cylinder LEGO Cars
• Making a LEGO car cross longer and longer gaps