You are right, Michelle, the accident  seems to have been only about 10 miles form Coos Bay with its modern medical facilities, not the many more miles we might have assumed from  the vague reference to Hwy 42, which runs clear to Winston. 
This explains why first responders were on the scene within 10 minutes of  the call, according to   Wordsmatter (above).   Sadly, the victim may have been dead on impact so the quick response time may not have mattered.