Bascule Bridge Mechanism

Watch Tower Bridge’s famous bascules rise for ships—a classic and unforgettable moment in any London visit.

Brief History: The bascule (French for "see-saw") design allowed Tower Bridge to open for ships. Completed in 1894, it was a groundbreaking solution to the growing need for both road and river access. Notable Features: The bridge splits in two halves, or bascules, which lift up to let tall vessels pass underneath. The precision mechanism is housed beneath the road level and is still operational. Fun Fact or Unique Angle: The bridge lifts about 800 times a year and the schedule is published in advance—visitors can time their visit to watch it in action. Current Use or Visitor Info: Watching the bascules rise is a top highlight. Crowds often gather on nearby sidewalks for a view. Visitors should stand behind barriers and follow staff directions when the bridge is operating.