The Senate is leaning towards abandoning the Obama administration’s
push for an 18-month delay of the next long-term transportation bill
and now plans to pursue a six-month extension of existing federal
infrastructure law, according to a report from CQ  this afternoon:
Rep. Jim Oberstar (D-MN) (Photo: Capitol Chatter )
official said the senators realized they would have trouble moving the
administration-backed 18-month extension, so they acquiesced to a
shorter term bill. …
A shorter extension would be a victory for
proponents of long-term transportation legislation such as the
six-year, $500 billion plan being pressed by House Transportation and
Infrastructure Chairman James L. Oberstar, D-Minn.
would Oberstar be inclined to see a six-month delay as a victory?
Oberstar and his top transportation lieutenant, Rep. Pete DeFazio
(D-OR), have warned 
that a series of short-term delays in the next infrastructure law risks
compromising U.S. economic recovery, and it’s not clear that House
members would go along with a six-month extension.
this point, we are sticking with the extension to the end of December
that passed the House," Oberstar spokesman Jim Berard said in an
One factor that may add a new wrinkle to the debate is House Speaker Nancy Pelosi’s (D-CA) push for 
a fresh round of job-creation legislation, which has given Oberstar new
momentum to pitch his long-term infrastructure bill as part of the
overall stimulus effort.
Pelosi aligned 
with Oberstar’s position on a new transportation bill earlier this
year; if the Speaker keeps more extra infrastructure spending from the
government’s general fund in the economic stimulus mix, the House’s
opposition to a longer-term extension could ease somewhat. The puzzle
remains how to pay for  more federal transportation investment, given widespread resistance in Washington to raising the gas tax.
the Senate win passage of a six-month extension, the earliest possible
deadline for Congress to take up Oberstar’s six-year bill — which
provides about $100 billion for transit and $337 billion for highways
— would be the end of April. The 2005 infrastructure law, however, is operating 
under a one-month extension that expires at the end of this month,
meaning that lawmakers may have to push it forward for one more month
before reaching a final deal.