CO 9 is a good road but has a fair amount of traffic, esp. through Breck.
Other options include turning off I-70 at Minturn and taking US 24 through Buena Vista. A little further but you avoid Vail Pass that way plus all the traffic in Summit County.
Of course you could take US 50 from Grand Junction to Poncha Springs, north on US 285 to almost Buena Vista then right on US 24. The biggest pass on that route is Monarch Pass.
Ken & Allison
2 Camping Cats (1 diabetic)
1996 4Runner, TRD Supercharger, Edelbrock headers
2007 Fleetwood Arcadia, Honda EU2000i
4 mountain bikes, 1 canoe, 4 tents, 8 sleeping bags, 2 backpacks
(You get the idea!)