Think it through.
Even his later claim that he was talking about infrastructure is BS.
The only Govt. entity that builds anything is the Corps of Engineers, and if you listen to the pissing and moaning from New Orleans, they usually screw it up.
Every single one of those things BO mentioned, roads, bridges, railroads, were originally built by private parties.
Even later when Govt. assistance played a role as with the highway system, the work was done by private companies and govt interference proved to be more hindrance than help.