Puente Pío Nono, Bridge in Providencia district, Chile.

Puente Pío Nono spans the Mapocho River, linking Avenida Vicuña Mackenna to the south with the Bellavista neighborhood and surrounding streets to the north. The crossing features a straightforward design that carries vehicle traffic and pedestrians across the water in one of Santiago's main traffic corridors.

The current bridge was built to replace a metal bridge from 1892, which was moved 100 metres west along the same river and renamed Puente Vicente Huidobro, now a theatre and cultural centre. The new Puente Pío Nono was officially inaugurated on 31 March 1983.

Law students from the University of Chile faculty beside the bridge long used it for parties and protests. Their best-known tradition was the "Guerra del Puente", a confrontation between first-year "mechones" of Law and Engineering that ended on 23 March 2000 when it got out of control, leaving students injured and damage to the Law School building valued at 3.5 million pesos.

The crossing is most congested during rush hours, so walking or crossing at quieter times offers a calmer experience along the pedestrian paths. It is primarily a throughway rather than a destination for lingering, so plan accordingly if you want to cross without heavy traffic around you.

Since 2018, this crossing has been incorporated into the Santiago Street Circuit and serves as part of the track for the annual Formula E race, the Santiago ePrix. Most visitors do not realize that the normal traffic route they cross occasionally transforms into a professional motorsport venue.