In the heart of prestigious Keystone at the Crossing on the north side of Indianapolis, River Ridge Apartments reaches new heights in luxury, convenience, and resident service. Our goal is to complement your lifestyle with artfully designed one and two bedroom apartment homes. River Ridge Apartments of Keystone is minutes away from Castleton and Carmel. Elegant, yet practical, the stylish interiors offer the optimum blend of form and function designed for the way you live your life.