The photo looks like a rural highway to me. This means fairly high speeds. If a car "hits the ditch," a bumpy ride turns into a fatal accident.
I suspect the jurisdiction belongs to whoever owns the highway. It could be the state or it could be the county.
A couple of heavy tow wreckers could move this machine. Less than $5000.
But there may be political pressure to keep the machine in place. It does look cute.