Linked from
The 8 pages that link to Bridge tower, each with the reason it gives.
Suspension bridgeBroader topic: The towers carry cable forces down into the bridge foundations.
Akashi Kaikyo BridgeRelated: The two towers support the main cables across the strait.
Menai Suspension BridgeRelated: The bridge's masonry towers carry the chain loads above the strait.
Mackinac BridgeBroader topic: The bridge’s steel towers support its main cables over the water.