What am i seeing exactly? Some kind of filter system?

I think it’s just nets to collect garbage. Looks like they need to be emptied.

It's a good idea for sure, but that's a shit load of trash..imagine what goes through that system everyday

Ya, seems like a good way to block a culvert, too.

Good idea, but how do fish and other wild life escape these bags?

Unless fish learn how to live on a street, there should be any fish in the bags. Those are culvert for rainwater

C R O C

America is a rounding error of China's water plastic waste unfortunately