The days of college football games played in cavernous concrete bowls with metal benches are increasingly numbered as schools continue to outdo each other with facility renovations and state-of-the-art amenities.

At least a dozen Power Five conference schools are currently in the midst of large-scale stadium upgrades, along with a growing number of smaller-conference universities and independents.

And rather than attempting more modest renovations, many of the projects are extending well into nine figures — despite wildly different circumstances.