[toast0]

WA state has a private way of necessity [1] (edit: i had the wrong word here). If my land has no access except through your land, you may not deny me access. Although you're welcome to attempt to negotiate with me to get to something that works well for both of us, but if not, I can do something reasonable.

WA also has easements by traditional access, but it seemed pretty limited and easy for property owners to avoid, when I was looking into it.

[1] https://app.leg.wa.gov/rcw/default.aspx?cite=8.24&full=true

[ghaff]

Although my understanding (through some personal experience) is that e.g. in Maine it's OK to have only water access. May not still be true but seemed to be in a case I was familiar with.

[dylan604]

Most people I know in these situations that are neighborly will chip in to the neighbor that "owns" the access to help maintain that access.