Quick Question regarding initial island layouts

Googling and the AC Wiki have failed me, but I need to know before I restart my island - can the airport and pier ever be on the same side of a river?

All the potential layouts I've seen show them on the opposite sides. I'd even be ok with them being across the river if Resident Services was in between because what I'm going for is a dense city-center vibe and that doesn't work if it has to span the entire south shore of my island, y'know? If I could condense it down to 1/2-2/3 I could even fill that with Nook's, Mabel's, and/or the museum and faux townhouses from panels and bookshelves.

Has anyone ever encountered an island with these three immovable features placed near each other or are they always spread out?