Ponte Marechal Carmona, Road bridge in Vila Franca de Xira, Portugal.

Ponte Marechal Carmona is a 1,224-metre road bridge over the Tagus at Vila Franca de Xira, with a 524-metre central deck divided into five 104-metre spans. It was the first bridge to link the two banks of the Tagus in the Lisbon region.

Vila Franca de Xira first formally requested a Tagus crossing in 1924, and the campaign was pushed by local newspaper editor António Lúcio Baptista and later mayor José Van-Zeller Pereira Palha. The contract was awarded in April 1948 to Sociedade de Empreitadas e Trabalhos Hidráulicos and Dorman Long & Co. for 130,000,000 escudos, then the state's largest and costliest public works contract. The bridge opened on 30 December 1951, inaugurated by President Craveiro Lopes and Prime Minister Salazar.

The bridge is named after Óscar Carmona, president of Portugal during the Estado Novo dictatorship, and the name has been the subject of controversy, with several proposals put forward to change it. The first official request for a crossing came from Vila Franca de Xira council in 1924, and the local newspaper Vida Ribatejana campaigned for it in articles by António Lúcio Baptista.

The crossing is toll-free in both directions, making it accessible to all travelers without additional costs. Be prepared for heavy traffic during peak hours, especially in the morning and evening when people travel between the two regions.

The 1951 inauguration was carried out by President Craveiro Lopes and Prime Minister Salazar, who arrived in a five-window Landau carriage that is now kept in the Carriage Museum. The bridge was the largest and most expensive contract the Portuguese state had awarded up to that time, at 130,000,000 escudos.