President-elect Barack Obama added sweep and meat to his economic agenda on Saturday, pledging the largest new investment in roads and bridges since President Dwight D. Eisenhower built the Interstate system in the late 1950s, and tying his key initiatives – education, energy, health care –back to jobs in a package that has the makings of a smaller and modern version of FDR's New Deal marriage of job creation with infrastructure upgrades. The president-elect also said for the first time that he will “launch the most sweeping effort to modernize and upgrade school buildings that this country has ever seen.”...