Originally Posted by
markjenn
I think I-70 going up to the Eisenhower Tunnel maxes out at 6% or so. There are some non-standard grades on interstates that are somewhat steeper, but interstate highways are generally engineered to stay under 6%. Some of the non-interstate paved passes in CO might go up to 8% or so.
- Mark
Actually, I am pretty sure you are correct, and it's been a while since I have been up the hill and seen the signs. That's kind of mind blowing that is only 6% and folks are talking about climbing twice that?? That's serious business that I wouldn't even attempt on my knees. I don't think I could climb that kind of grade, not 12% for long at all, if at all. I can't imagine what that is then. I am going to start paying attention more and looking into it more so I understand. Thanks for the clarity.