MIAMI, FL - FEBRUARY 02:  Construction work is underway at the $559-million reconstruction project, some of which is being federally funded, at the interchange connecting State Road 826 and SR 836, one of the most heavily congested areas in Miami-Dade County, on February 2, 2015 in Miami, Florida. President Barack Obama announced his $4 trillion, 2016 budget on Monday, and is requesting $478 billion over six years to make significant repairs to the nations infrastructure and to build new bridges, roads, and railways.  (Photo by Joe Raedle/Getty Images)