Transportation advocates will descend on Washington Monday to kick off "infrastructure week" without a clear picture of what President Trump's massive rebuilding package will look like.
But even though the timing and funding offsets for the proposal remain up in the air, other key details have begun to take shape.
Here are five things we know so far about the White House push to upgrade U.S. roads, bridges, airports and other public works.
Read more: http://thehill.com/policy/transportation/333202-five-things-we-know-about-trumps-infrastructure-plan