I see absolutely no need for such a project. There have to be numerous other projects that would be more beneficial to the city than lighting an underpass with school colors. I also think it is a not-so-bright idea to spend money on a project that has a very high chance of being damaged soon after completion, if not during the project. Additionally, the copper has a great chance of being stolen and the project will have been money wasted or create a drain on funding to keep repairing the lights.
If thieves are bold enough to steal copper wiring from interstate lighting, do you not think they will be all over lights under a bridge?
An alternative could be other projects like the Matheson Bridge on North Davidson Street.