trunnion bascule bridge
trunnion is a French word for "stump" or pivot point; bascule is a French word for "see-saw"; a trunnion bascule bridge describes the type of bridge that pivots like a see-saw around a central core
trunnion is a French word for "stump" or pivot point; bascule is a French word for "see-saw"; a trunnion bascule bridge describes the type of bridge that pivots like a see-saw around a central core