Okeedokee,
Sad but true,I just never, ever go down the valley after about noon on Sunday any more. But if you have to:
You can indeed go down Reiter Road. Take a right at the stop sign before SR2 and follow May Creek Road around behind Gold Bar to hit SR2 at Mike the Barber's
From here to Startup you are really and truly fucked as there is no alternative bridge across the Wallace River.
Entering Startup you can take a right for a circuitous detour that brings you out on the Basin Road at the Saw Shop.
From Sultan your choices are two-fold. Left at the first light takes you south across the river thence west to come out on 203 just south of the Lewis Street bridge in Monroe. Right at the second light takes you past the golf course to come out in Monroe at the first light.
Woodinville/Duvall road is often a better choice than 522, but all choices are frequently hell.
If things are truly grim Jack's Pass is a pretty alternative from Sky to Index.
Now, the price you pay: Everybody puhleez drive like slowly, sanely, and safely on such of these alternatives that take you through residential neighborhoods especially through Index. Cars come an absolute maximum of fifth here in Tiny Town, after kids, pedestrians, bikes, and dogs, and we very much intend to keep it that way.
And don't tell anyone else; it's a secret