I think this is great. I'm envious you have such a great place to photograph. I can picture 4 of these exact shots, one for each season, mounted and framed in my house :)
Anyway, on to my critique. I like the composition a lot. The leading lines pull you right in to the photograph. The tones are nice, it fits the challenge nicely.
Couple things I don't like: One is the signs on the right. Not much you could do about it, but they do distract a bit. And second is the sky. Shots like these are greatly improved with an interesting sky. Big billowy clouds can really give it some punch.
I do love this. it's at the level where I can begin to be picky. The sign-post on the road is a big let down to me. You draw my eye right in, and there is a stark sign-post. I'd also prefer not to see the white on the road. Otherwise well balanced, lovely hue, and great curve. 8