Large-scale infrastructure spending probably isn't going to procure the economic growth outcomes we all desire. Firstly, because these investments take a lot of time, and given the crisis you want a short-term bounce back as quick as possible. Secondly, we can look to the experience of other countries here - in the late 80s Japan spent something like 2 trillion on levelling up their countries infrastructure, and two decades on their GDP per capita had virtually remained the same.
I think if this government wants to talk seriously about spurring growth it needs to start talking about cutting regulations and cutting taxes.
Understand something - the government does not create wealth. It's the investors, consumers, and business owners who do. If you unfetter the movement of these individuals you actually facilitate growth.