A set of range lights was erected at Saint-Michel in 1928. These two towers both stood roughly eighty feet tall and were surmounted by enclosed, wooden watchrooms. The front tower had a focal plane of 100 feet above the river, while the rear light, located on higher ground 5,610 feet away, had a focal plane of 179.
The original range lights served until 2006, when they were replaced by the present pair of range lights: an eighty-two-foot-tall, tripod, skeletal tower for displaying the rear light and an eighty-foot-tall, square, skeletal tower for displaying the front light.