The switchback road will get you fairly high up, depending on how many scratches you want to incur. I parked at 8,200' or so. After ditching the vehicle, it was a nice road walk to the mail truck, then a short climb up the ridge to the North Peak for a snack. Afterward, I traversed up high on the connecting ridge (class 3 scramble, not too difficult) to Middle Sacajawea to find the summit register. Lots of strange and entertaining items in there ;) Lovely views despite the smoke everywhere this Summer. If one would like to get on Monument Peak from the North Sacajawea Peak, it is just a ridge climb away. Just allot yourself enough time, that's all!
"So I was sitting in my cubicle today, and I realized, ever since I started working, every single day of my life has been worse than the day before it. So that means that every single day that you see me, that's on the worst day of my life."
--Peter Gibbons (Office Space)