Pontoon bridge a pontoon bridge to cross the Bosphorus and Emperor Caligula built a bridge at Baiae in 37 AD. For Emperor Darius I The Great of Persia (522–485 BC), the Greek Mandrocles of Samos once engineered a pontoon bridge that stretched across the Bosporus, linking Asia to Europe, so that Darius could pursue the fleeing Scythians as well as move his army into position in the Balkans to overwhelm Macedon. Other spectacular pontoon bridges were Xerxes' Pontoon Bridges across the Hellespont by Xerxes I in 480 BC to transport his huge army into Europe: According to John Hale's "Lords of the
Pontoon Beach, Illinois Mississippi River from Pontoon Beach. Pontoon Beach, Illinois Pontoon Beach is a village in Madison County, Illinois, United States. The population was 5,836 at the 2010 census. Pontoon Beach is located at (38.726078, -90.060505). According to the 2010 census, Pontoon Beach has a total area of , of which (or 79.75%) is land and (or 20.25%) is water. As of the census of 2000, there were 5,620 people, 2,134 households, and 1,519 families residing in the village. The population density was 686.9 people per square mile (265.3/km²). There were 2,341 housing units at an average density of 286.1 per square