Counting the rings, I came up with the 115 years.
Maximum Life Span
One of the most common and well-known species of oak, the white oak (Quercus alba), has an average life span of 300 years. Under excellent growing conditions, however, white oaks are known to live up to 600 years, making them one of the longest-lived American oak species. Post oak (Q. stellata) has a maximum life span of 400 years, as do the northern red oak (Q. rubra), chestnut oak (Q. prinus) and overcup oak (Q. lyrata).
Shorter-Lived Species
Many other types of oak trees have known maximum life spans of around 200 years, including the pin oak (Q. palustris), scarlet oak (Q. coccinea) and southern red oak (Q. falcata). While the shorter-lived species may grow at a somewhat faster rate than their longer-lived cousins, all oaks have a slow growth rate compared with many other types of shade tree species.