Just a note on Suicide Grade Rd.
Maps show it going through on the top side, connecting to other roads.
It does not go through, it is an up-and-back road only, now.
The Dalles Watershed closes the SE end.
SG is within the Watershed, but is still a legal road until the gate at it's end.
This Watershed was the beginning of the demise of the South Fork Mill Creek Community.
They were no longer allowed access to South Fork Mill Creek,
when "Dalles City" (now, The Dalles) closed the watershed to secure it's open water source.
It used to, many years ago, loop around to the NE to Mill Creek Ridge Rd,
but that goes through private proerty (Arrowhead Ranch), and has also been closed.
BTW, Mill Creek Ridge Rd (past the end of the main Mill Creek Rd) is an awesome rough road,
but-decent-rider-on-a-big-bike-freindly, beautiful loop up towards FS17, and into Parkdale.
Views galore, one of my favs
"got no problem with keeping truly roadless areas as wild....
On the other hand, if it has been logged or mined and roads already exist,,
...then that land should be open for public use" (peterman)