My roads are all paved, but within that general category I have all kinds, because it is 30 miles one way:

1) two lanes narrow, residential, and bounded with curbs
2) four lanes undivided bounded with curbs
3) four lanes divided with a 3 foot shoulder
4) 3.5 mile long bridge with a 10 foot wide emergency lane to ride in where the wind is unbelievable in the afternoon.
5) two lanes, rural, nice grass shoulder
6) MUP - but only a half mile
7) Beach Drive in Downtown St Pete - speed limit is 15, I bike it at 18, and cars still try to pass me. Why? Because I'm on a bike. Most time they start to pass me then realize how fast they're going and they abort the pass. It's hilarious.
9) Then there's the drawbridge with the metal grate. There's always that irrational fear of getting a flat just as you're humming across that nasty looking metal grate.