There is not a single bridge crossing the Amazon River.
Why it is true
Despite being one of the largest rivers in the world, the extreme width of the river in the rainy season and the dense, unstable forest on the banks make bridge construction an unnecessary engineering challenge, as transport is done by boats.
Source: Infrastructure
Would you rather be asked first?
This is the reading side of the site, so the answer is in the sentence above — that is the whole point of it. Test yourself works the other way round: the question comes on its own, and the fact and the explanation only appear once you have answered.
Related facts
The Amazon River has no bridges crossing its main stem along its entire length.
Saudi Arabia has no permanent rivers.
The Amazon River is the largest river in the world by volume, discharging more water than the next seven largest rivers combined.
Millions of years ago, the Amazon River flowed westward into the Pacific Ocean, until the rise of the Andes reversed its course.