Which Highways that go through Austin (US Routes & State Highways) Could use some widening? instead of something new
With the way the Austin metro has been growing
several routes need upgrades.
East of Austin both US-290 and TX-71 really should be expanded into fully Interstate quality routes. I don't care if they get plastered with Interstate shields or not. But they do need to be 100% limited access as well as add more lanes in some places.
US-290 going West of Austin needs Interstate quality upgrades farther West than what is currently planned. The Oak Hill Y project will be a good start. But that project will end just West of the Circle Drive Y. Traffic jams are taking on place on US-290 clear out past Dripping Springs.
The Southwest segment of the TX-45 loop needs to be extended in both directions, East to I-35 and West to US-290
where it should tie into a new freeway functioning as a Western entrance/exit to the Austin metro.The US-183 freeway needs to be extended farther North out of the Austin metro. I don't think it's necessary to make a US-183 freeway all the way to Lampasas. But it could go as far North as Briggs in the near term.
TX-195, from the I-35 split near Georgetown going up to Killeen, needs more limited access improvements and eventually an upgrade to 100% limited access. In the Killeen area it will be tricky tying that freeway into I-14.