Ponte de São João
The Ponte de São João  or St John's Bridge is a railway bridge in Portugal. It was designed by engineer Edgar Cardoso and replaced the functionality of the still standing Gustav Eiffel wrought iron Maria Pia Bridge in 1991. The Linha do Norte connecting Porto and Lisbon runs along this bridge.

References

Bridges in Porto
Bridges completed in 1991
Railway bridges in Portugal
1991 establishments in Portugal
Bridges over the Douro River