The takeout is on a large gravel bar on river right where parked vehicles will hopefully be visible.  If you drive onto the gravel bar, the easiest exit is to drive west a few hundred feet until you see a dirt ramp leading back to the road.

This may be one of the most important takeouts to not miss in the world because the unrunnable class VI Selway Falls lurks downstream.

To reach the takeout, head west on US12 from Missoula over Lolo Pass.  Turn left onto Forest Road 223 when you reach the confluence of the Lochsa and the Selway.  The takeout is at the end of the road shortly after passing Selway Falls.