[whiddershins]

What was the size of the organizations that actually made the New York Subways, on time, and on budget?

What size organization made the Verrazano and the Golden Gate bridges?

What size organization made the Hoover Dam and the Pacific coast Route 1? Using tiny (compared to the equipment we have now) steam shovels?

[pandemicsoul]

All of those projects were built nearly 100 or more years ago. Public works can't be built in the same way anymore because laws are different and there's vastly more complexity in property ownership.