- The essence of a bridge is not just that it goes over something, but that there’s clear space underneath for a river, railway, or road. Maybe this is already obvious to you, but bridges present a unique structural challenge. In a regular road, the forces are transferred directly into the ground. On a bridge, all those forces on the span get concentrated into the piers or abutments on either side. Because of that, bridge substructures are among the strongest engineered systems on the planet. And yet, bridge foundations are built in some of the least ideal places for heavy loading. Rivers and oceans have soft, mucky soils that can’t hold much weight. Plus, obviously, a lot of them are underwater.
- South Sudan (Wikipedia)
South Sudan (/suːˈdɑːn, -ˈdæn/), officially the Republic of South Sudan, is a country in East Africa which is bordered by Ethiopia, Sudan, the Central African Republic, the Democratic Republic of the Congo, Uganda and Kenya including the vast swamp region of the Sudd, formed by the White Nile and known locally as the Bahr al Jabal, meaning “Mountain Sea”. It is a landlocked country. The population is nearly 12.7 million people in 2024, and Juba is the capital and largest city. South Sudan gained independence from Sudan on 9 July 2011, making it the most recent sovereign state with widespread recognition as of 2024.