The little town near me had the grates in line with the road (taking up three feet of the lane on the passenger side every 50 feet or so).
My wheel could have easily slipped in.
About two years after I was moved here, and I began riding nearer to the double yellow to avoid the danger in this area, the town reoriented the grates to be perpendicular to the flow of traffic.
This is much safer
I never said a word.
Best of luck in your quest.