"Funding for most programs would increase temporarily under this plan, falling back to more typical levels by FY 2013. The Administration is hoping to use this year's transportation budget as a sort of second stimulus, and the $50 billion in new funding would include some measures that replicate what was seen in the first stimulus."
See the graph of the transportation agencies that shows the increased sums for 2012 that are dramatically reduced the following year. The largest increase, $30 billion goes to the Federal Highway Administration. Federal Transit Administration budget increases by $10 billion.
Also see the chart showing New Starts funding, the largest being the LIRR East Side Access at $215 million followed by Second Ave. subway at $197 million (see Planetizen: New York City Rail Projects Win Huge Federal Funding Awards).
Thanks to The Transport Politic