Bing's more recent (2020-07) streetside imagery, by comparison, doesn't go particularly far beyond US61, but the extent that I can see looks like it's all paved: https://www.bing.com/maps?cp=39.685407%7E-91.406978&lvl=17.0&v=2&sV=1&pi=-4.7&style=x&dir=273.9