A bascule bridge (sometimes referred to as a drawbridge) is a moveable bridge with a counterweight that continuously balances the span, or "leaf,"throughout the entire upward swing in providing clearance for boat traffic.

Bascule bridge
Bascule bridge
Bascule bridge
Chemical clockwise tridifferentiation of alpha- and beta-cyclodextrins: bascule-bridge or deoxy-sugars strategies
Performance evaluation of a lightweight epoxy asphalt mixture for bascule bridge pavements
ChemInform Abstract: Cap‐Assisted Synthesis of Hetero‐Trifunctional Cyclodextrins, from Flamingo Cap to Bascule Bridge
Bascule bridge with hinged section
Control Techniques for Erection and Closure of Steel Box Girder of Tianjin Haihe River Bascule Bridge
Discussion on the Design of a New Type Bascule Bridge
New Chicago-Type Bascule Bridge
First Continuous Remote Bridge Monitoring System Ensures Safe Operation of 65YearOld Rolling Bascule Bridge
Rebound of the bascule bridge
Mechanical properties of epoxy asphalt mixture pavement with lightweight aggregate applied on bascule bridge