Faced with terrible Oregon drivers that chose to go the speed limit or 10 miles under the speed limit. It was frustrating as can be. And without fail, I went into the Portland area from the coast 3 times during my time there, and without fail, there was an accident every time on I-5 with traffic slowing down to a crawl for usually 30-45 minutes.
With that said, I love the coast and will continue to spend a lot of time there.
I assume you are in or near Florence for your trip? Enjoy! This week is supposed to be amazing on the coast. About 10 degrees warmer all week.