Texas

That's the primary north/south route, which is part of the problem. For many purposes, it's the only N/S through freeway which is why Austin traffic is often near the top of many "bad traffic" lists.

There's Toll 130/45, but it's more of a bypass that routes traffic east of the metro before rejoining I-35.

The alternative to toll roads is taxpayer-funded ones. I think it's preferable that the users of the roads pay for them, particularly with the massive amount of truck traffic Austin gets since it's on the main line from Canada to Mexico.