The Posted Coordinates will take you to two Signs placed vertically. The bottom Sign is for a Crossing. The top Sign displays a figure.
What is in the top Sign's figure's Right hand?
If a Red Flag, then Final Coordinates are N47 35.306 W122 18.203.
If a Yellow Card , then Final Coordinates are N47 35.306 W122 18.135.
If a White Strip, then Final Coordinates are N47 35.306 W122 18.086.