Cable Stayed Bridge

We're back home in SF, but I'm thinking about some of the things we saw in Columbus:

The Lane Avenue Bridge crossing the Olentangy River on the Ohio State campus is 370 feet long and pretends to be a cable stayed bridge (the new fashion for suspension bridges that eliminates the need for cable 'anchors' at each end). My guess is that the cables are purely decorative, and don't support the road deck. I think the deck is supported by girders running underneath the bridge.

If I'm right, then the bridge towers are a frivolous and costly addition to the bridge.
If I'm wrong, and the cables are structural, then the bridge design doesn't look right. Removing the buttresses might help.