These routes did not begin or end at another state highway.
However, due to poor demands, this route will end on September 10.
Route 18 then ends at Routes 7, 13, and 52.
The route ends at the east end by connecting to Interstate 8.
The route ends at US-77 in the center of the town.
The route ends at the I-80 interchange on the northern side of town.
Several routes were being considered, but at the time, the most likely route would have ended north of Smithfield.
Even with the outbreak of the war long-range civilian routes did not end.
Lastly, some routes end at specific national borders rather than cities.
These routes ended when the ferry was discontinued in the middle of the 20th century.