Cool!
The way this highway is set up (and, again, the other optional routes are sooo far out of the way - although I have used them before in a pinch when particular lanes on my main route were closed due to a bad accident, etc.), it seems to be more about aesthetics than actually moving massive amounts of traffic. It's definitely not a freeway/expressway. It has only 2 lanes running each direction, a shoulder, a large "natural" median, and traffic lights. No off or on ramps, no access roads, no clover leafs.
I think back in the day when it was first being planned, nobody could even imagine how much developement there would eventually be out that far west of Austin proper.
It is indeed a beautiful drive, but, when you're stuck in a traffic jam at night on your way home, and as far as you can see there are nothing but headlights coming from the other direction, and tail lights in front of you, it's a bit annoying.
To add even just one more lane in each direction, in the section I drive, would cost millions upon millions. The cutting through more of the hills, the widening of all the bridges across all the creeks and the river/lake, etc.
A $720 million transportation bond was passed by voters on Nov. 8th. All I could find in it for that section of road was a few million for improvements to one intersection. How they're going to "improve" that intersection beyond what they've already done, I have no clue.
Here are some pics of the section I drive...
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And, here's a map. I drive approximately the middle 2/3rds of the section of the road highlighted on the left...
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