I went ahead and created a US Route 101 page for Gribblenation given it is our second most common highway to post about. Our content is quite California heavy, but Oregon has some substantial coverage as well courtesy Doug:
https://www.gribblenation.org/p/us-route-101.html
Down the line, consider an entry for the OR 255 former alignment of 101 between Brookings and the Pistol River.
There is a chance Doug might already have the material ready to feature OR 255. I know he's got a bunch of Oregon stuff which hasn't hit the blog site yet.
In Coos County, 101 used to run from Bandon to Coquille (now SR 42S) to Coos Bay (now 42 to the current semi-interchange with 101 6 miles south of Coos Bay). You would be amazed at how much of the original highway remains in Coos County!
Rick