The 25 de Abril Bridge is located in Lisbon, Portugal, spanning the Tagus River, and is considered one of the symbols of the Portuguese capital. This bridge is the older of the two that span the Tagus in this city.
This suspension bridge is 2,277 meters long, with a main span of just over one kilometer. Its two towers are about 190 meters high. Approximately 73,000 metric tons of steel and 263,000 cubic meters of concrete, approximately.
At the time of its construction, the bridge had four lanes for vehicular traffic; it was later expanded to six lanes, and a deck for train traffic was added beneath the roadway, requiring the installation of new cables to support the structure.
Construction of this bridge began in 1962 and was completed four years later, in 1966. The April 25 Bridge It rises 70 meters above the water level and is 21 meters wide.
The bridge is crossed by a few 150,000 cars and 160 trains every day.
It is striking how similar this structure is to the Golden Gate Bridge in San Francisco; both are located in earthquake-prone areas. Furthermore, both are made of steel and painted red.
The April 25 Bridge is one of the longest suspension bridges in the world.
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