Bridge Bonanza: Exploring the World's Most Expensive Bridge Constructions
10. Ponte 25 de Abril, Portugal
Ponte 25 de Abril Overview Location: Lisbon, Portugal
Founded: 1966
Cost: $32 million
Opened in 1966, the Ponte 25 de Abril is a significant landmark in history. Originally named Ponte Salazar in honor of António de Oliveira Salazar, the dictator of Portugal, the bridge underwent a dramatic transformation following the Carnation Revolution in 1974, which marked the end of the dictatorship.

Ponte 25 de Abril Overview
Built at a cost of $32 million, the Ponte 25 de Abril spans 2,277 meters across the Tagus River in Lisbon, Portugal. It serves as an important traffic hub and a powerful symbol of the nation's progress toward democracy and independence. Following the nonviolent Carnation Revolution, the bridge was renamed "Ponte 25 de Abril" to honor the date of the revolution and represent Portugal's shift to democracy.