This is the wood and metal structure that straddles the creek as it plunges into a culvert that will take it to the river. Its purpose is to comb out any storm debris and keep it out of the underground system, to keep it from getting plugged up.
The rack is falling apart. They've repaired it several times since I've lived here, but it's reached the end of its rope. They're going to tear it down and replace it in June.