The closest ramp above the mouth of the toutle is at the mouth of the Olequa.
Take exit 57 head west about 200 yards to Barnes drive.You will be looking right at the truck stop.
Take the very first left.This is Barnes Drive.Go about 2-3 miles and take a sharp cutback right on the first road you see.Sorry I dont remember the name of it.
About 1-200 yards the first road to the left will take you about 1/4 mile to the launch.
If possible launch from the bar below the regular launch.When they put the launch in they put it as a straight shot to the river with no angle.Then put riprap below it instead of above it.Its not a good launch.
Its been awhile since I have been down that way.There were a few shallow spots by Hog island.but most of the run was pretty good.Somebody else might be able to give you better info on the run down river.
Good luck fishing.