An account of how railways are carried across river and valley. There is frequently some confusion of thought over viaducts and bridges; viaducts are often wrongly called bridges. The Tay Bridge, for example, is not a bridge but a viaduct. Viaducts are not only vital links in railway communication, but they are also superb examples of engineering.
The story of the Sao Paulo Railway, “the trunk line that climbs a precipice”. It was built by an English engineer, and one section of the line, known as the New Serra Inclines, is cable-
You can read more on the Sao Paulo Railway in Wonders of World Engineering.