Interstates safer than "Blue Highways?"TRIP UPDATE

I think interstates are very safe, but not that interesting. Blue highways and turkey trails are very interesting, but can be challenging driving pulling a load. Some of the roads in Colorado in particular have giant drop offs and no guard rails. There can be hail and sleet even in summer. There is plenty of OTR truck traffic. Some of the roads are narrow. It takes a lot of focus to drive on those roads, especially if you are not used to them. Plan on fewer miles per day than usual.