July 2024 Added: … Google Street View Shows The Turnoff To The Older US-95 At Poe Saddle, Called “White Bird Grade, Which Has The ZMM Narrator’s Hairpin Turns.
… Leaving The Above-Mentioned “Big Rest Area Parking Lot”, And 11 Minutes Later, Go Into A Historical Marker Turnout, Where We See The /\Above/\ Shown Turnoff.
…Back At That Time, And Despite Our Watching Closely For The Turn-Off (Shown In /\Above/\ Street View) FROM The Newer US-95, ONTO Where The Older US-95.
…However, David Matos & Henry Gurr Entirely Missed Seeing It, as stated in the previous Photo. Thus, We Failed In Our Original Plan, To Drive Down The Older US-95, That Is Called “White Bird Grade”.

Still At Waypoint 281a, Along The Newer US-95, About 10.4 Miles SouthWest of Grangeville, ID.
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File = GoogStVu OnNewerUS-95 SeeTurnOffToOlderUS-95 AtPoeSaddle2ndBetter