Ah, Portland is lucky. Here in Seattle, we have roads that are 1235 NE 40th St (for E-W streets) as well as 12345 University Way NE (for N-S avenues). The latter, as you would suspect, totally breaks Apple Maps.
That is on top of the issue of searching for something like "1st and University", which takes me to some L'ecole in Paris, France rather than the intersection that is a block from me. It's as if they don't factor in your current location at all. I know on the desktop I frequently look at maps of faraway places, but I'd suspect that people tend to look for things near them while on mobile devices.