If you have prepared plans, infrastructure is well suited because it can be started so quickly. Hiring can start immediately once the contract is signed, constr

If you have prepared plans, infrastructure is well suited because it can be started so quickly. Hiring can start immediately once the contract is signed, construction often starts only a few months later. But that assumes that all planning stages have been completed. Those take the longest (often several years) but are less costly. So preparing those would be worth it now, starting to actually hire people to build would however increase the risk of overheating the economy.