20 is NOT under construction at this time. The new part is currently on-hold until some corrections are made and that looks like it is going to take many more months to work out and in the mean time, the road is the same as it's always been with some pretty good curves between Eddyville and Toledo, but nothing that should give you problems. We take this road at least bi-weekly and take the motor home over it twice a year. It's not a problem. Just obey the posted speed signs for the curves and you'll be just fine. If you're coming to Newport, I highly recommend Pacific Shores Motorcoach Resort.
Ron