Finally in the late 30s, as the roadways improved, Oregon once again asked that 20 be brought to the coast, this time to Albany. A review showed some areas still needed work but by 1940, 20 made it to Albany, OR and by 1942 was in Newport. Finally a transcontinental highway. Sections in Idaho were still slow to improve and some of the route was not signed 20 until later 1942.
The map shows in Red the present route of US 20. The Green indicates the original plan of US 20, which is mostly US 30 today with the exception of the connector from Idaho Falls to Pocatello. US 20 and 30 are concurrent today in Mountain Home to near Boise.
Today - this is why US 30 is above US 20 in Oregon.