Are you mad? There hasn't been any improvements to infrastructure because Republicans refuse to pay for anything. They have been actively been working against the executive branch for 8 years precisely so that you can make the above statement. They controlled the purse. If they had worked with the President we would have seen something. The Republicans are not set up to legislate anything, instead, you see Trump talking about toll roads, so yes, you will see infrastructure but likely given to private parties in which you will be paying tolls on. In fact, I will bet you, your taxes won't be going down anytime soon either, but a lot of things are going to be expensive.