Were they good projects? Did they accomplish good things? Then who cares if they came from the left or the right, or the government or private enterprise, good things happened. Sometimes government is in a better position to accomplish tasks than private industry. The highway system is a great example of this, it took 50 years to get to basically done (though of course by that point lots of it had aged and needed referbing and expansion), no private industry would have ever done it. There’s no money to be made in making an interstate highway system, but the country is a better place for having one, it adds a layer of freedom to our lives that’s not possible without it.
No and no.
Saying “who cares (where/from whom it) came from” says a lot about one’s political leanings, and saying “(s)ometimes government is in a better position to accomplish tasks than private industry” says even more about same.
The question about whether the US is a “better place” with the interstate highway system as a public works project is still very much open. The Allies certainly found that the autobahn system made it very easy to penetrate the “Fatherland” with military might; it may be (and not just “may be”) that enemies of the USA already find the same ease with the interstates.