On Sunday, September 6, 2009, we drove the length of Washington State Highway 41 . . . and then the length of Idaho Route 41! Do you see the little red dot on the right side of the map? That's the Washington portion.
State route No. 41:
A state highway to be known as state route number 41 is established as follows:
Beginning at a junction with state route number 2 in Newport, thence southerly along the Washington-Idaho boundary line to Fourth Street in Newport.
Here we are in Newport, at the junction with US 2, with the Idaho state line mere feet to my left, about to set off on our grand journey of Washington Highway 41. It is, however, never signed as a Washington highway. It's only labeled Idaho 41, for the vast majority of this route is within the Gem State, stretching down to I-90 near Coeur d'Alene.
Three blocks later, we're at the halfway point of the Washington portion of Highway 41. We are, by the way, heading south. Since most odd-numbered highways in Washington are described (and mileposted) from south to north, this route is an anomaly. It would make no sense to describe this highway from south to north, however, since the northbound lane is actually in Idaho, not Washington!
At 4th Street, SR 41 curves eastward, fully entering Idaho. I suppose you could continue straight onto State Avenue, but that wouldn't be the highway.
Welcome to Idaho!