Okay, okay, I get it: you're a special snowflake and you'll spring whatever previously unmentioned random BS on us in order to move the goalposts to pretend your position -- which to be clear, is that some fucking dog is more important than proper public transit -- is somehow anything short of ridiculous.
But sure, I'll play along in good faith: FYI, getting rid of level grade crossings does not necessarily involve tunnels; bridges are a thing too. Therefore, your argument fails.
What histrionic excuse for your train hate are you going to come up with next?