Pont-Rouge sector is also called Îles-aux-Raisins. Both sides of the river has some of the best mixt and ice lines around.
An old topo can be downloaded of FQME website. As the ice and rock is changing a lot, it is preferable to look for recent conditions.
This sector is also home of the Festiglace, an event that bring together ice climbers from many countries. The event occurs every year mid-february. Check it out on festiglace.org.
GPS track for South (facing) side (Valentin, sector 41, etc): GPX file
Éric Tremblay from Passe-Montagne école d'escalade on Valentin