I'm sorry to disagree with this.
First - 'Green New Deal' is a slogan, not anything material that helps fix underlying operational problems.
Second - we don't need to 'rebuild' most things, we need to fix, maintain.
Third - this is not an issue with 'green' or 'innovation' in the technical sense - it's about the efficiency of the bureaucracy.
Fourth - 'All the wasted money' is going into the pockets of seriously powerful vested interests - they are not interested in reform.
Are you ready for the political cost of taking on the Unions? Esp. public sector unions? They may not have their fingers in the pot, but they still likely a massive barrier.
What about exposing the fact that a ton of workers in infrastructure are in the country illegally? Who's going to 'clamp down' on that and pay the political price?
What about the fact that all these firms are massive political donors to the powers that be? How do we solve that one?
And fighting entities: SF is a tiny city. So is Palo Alto. So is Oakland. The 'Bay Area' needs coordination and nobody really wants to give up their little fiefdoms of power. So there are a lot of problems like that.
The issues are complex and a lot of it has to do with vested interests and power, not 'technology' or anything like that.