This was mentioned on another forum and I thought it was interesting:

"There are 17 bridges across the Oklahoma River between Easter and Meridian. It would be nice to see the city beautify these bridges to make the river more attractive. Here are some ideas;

1. Add neon lights
2. Add wroght iron
3. Fake suspension cables and towers
4. Brick facade
5. add arches under the bridge (for a European effect)

Since all these modifications would only be decorative and non structural they should be inexpensive to implement. Money could come from beautification grants and other sources and not from real highway, bridge, and road funds. "
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I personally like ideas 1, 3, and 5. Give the bridges somelight at night!! And the suspension cables would make the bridges look more like the Golden Gate! The arches would add architecture!