This obviously isn't the tallest one. Like Mark says, it will grow in caliper until it dies.
Silver maples are very fast growing trees, which indicates they tend to be short-lived.
But under ideal growing conditions, they can certainly put on a lot of girth before they die. Silver maples as a street tree are much maligned for their weak, brittle wood, but I think they've gotten a bad rap. I've noticed during this windstorm and last winter's devastating ice storm in upstate New York and Canada that silver maples weren't damaged any or much more than most other street trees by ice and wind. After the demise of the American elm, few trees exist with the large stature of the silver maple that are suitable as street trees.