Art is a communication expressed in a specific media in order to color or give further meaning to the message. The message of an artistic bridge should be "the harmony of material and engineering evoke beauty in the work of mankind." The message here is "we pooped a bridge!"
You said there's never any reason for art. That's not just abusive, it's wrong. Without a reason, it's not art. And the reason here is weak. It's "because we could." That's what makes this objectively bad.
You’re confusing reason as in technical requirement with reason as in why they chose to do something. They can choose to do something without it being a requirement.
And you’re changing your comments after they’ve been replied to - please don’t do that.
It's art. There's never any reason for art.
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