Quote:
Originally Posted by JoninATX
A 12 lane tunnel is not a bad idea, it would also require expanding from the muller development, and were IH 35 over Lady Bird Lake also back to south Austin and it could work, cause think about it were IH 35 and the double deckers meet its all ready below ground expand it another 4 lanes both ways taking out all the feeders and double deckers make it a tunnel system fill it up were it's at grade level put access roads above it... the tunnel system would start were the double deckers would meet and end before lady bird lake just think of the possibilites you can have over the tunnel a huge park over more denser development, even a light rail over the tunnel could work.
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You know, I've thought of that crazy idea myself before. Interstates thru downtown are such a no-man's-land, it would be wonderful to be able to convert all that land into usable, livable space. However, I think that would be so enormously expensive that it's just not going to happen, especially in this political climate where investment in infrastructure is just not supported (unless it's a new road, of course). I'm thinking of all the funding gyrations they went through to get the Waller Creek tunnel approved. Still, a giant highway tunnel would be super-cool!
I think the only practical solution is to somehow divert the "through traffic" away from I-35 and keep the downtown part of the highway for local use. This assumes, of course, that a good chunk of our traffic is non-local. I did some Google Earth measuring, using I-35 and 130 intersections as the beginning and ending points. Going by I-35 is 42.4 miles. Going by 130 is 53.8 miles. Now, at the height of rush hour it probably would be faster taking the 130 route, but most of the time it's still probably more attractive to take I-35.
I guess that's what M1EK's proposal to toll I-35 and make 130 free is all about, to divert more traffic to the loop.