Ponte Sisto is a footbridge in Rome's historic centre, spanning the river Tiber. It connects Via del Pettinari in the Rione of Regola to Piazza Trilussa in Trastevere. The construction of the current bridge was ordered by Pope Sixtus IV (for whom it is named) using the architect Baccio Pontelli between 1473 and 1479 to replace what remained of a prior Roman bridge named Pons Aurelius.