Woodinville is a Seattle suburb, on the NE end of Lake Washington. I believe most of wineries are along WA202, which runs from WA522 and WA520 in Redmond. It's a broad river valley that has preserved a just a bit of its original agricultural character. While pleasant enough, it's not rural or scenic (in the usual Washington sense).
I not that familiar with the wineries, but I believe they all use grapes grown elsewhere in the state. There are some vineyards on the west side of the Cascades (mostly further north), but most are on the drier east side (e.g. Yakima, Walla Walla). In other words, these are wineries, not vineyards.
The closest freeway is I405, the main NS freeway on the east side of Lake Washington. WA522 takes you around the north end of Lake Washington. WA520 floating bridge is a toll route across the lake. They are building a new bridge parallel to that. I90 also crosses the lake on a floating bridge.
WA 522 continues as semifreeway to Monroe, where it connects with US2 to cross the Cascades to Leavenworth, Cashmere and the orchards around Wenatchee.
If camping in an RV, Lake Pleasant RV Park if often recommended as a place in the Seattle area. Its on Bothell Everett Hwy north of Woodenville.