The city has already started their spring "community cleanups" where you can dump larger items that won't fit into your black bin.
Link
I'm already feeling guilty about dumping that old BBQ, but I don't think that they'll accept all of that old, corroded metal in the blue bin. At least this will save me a trip to the landfill or dismantling it and putting a few pieces in the black bin each week until it is gone.