Administration officials said the transportation plan's initial $50 billion would be the beginning of a six-year program of transportation improvements, but they did not give an overall figure. The proposal has a longer-range focus than last year's economic stimulus bill, which was more targeted on immediate job creation.
The plan calls for rebuilding 150,000 miles of roads; building and maintaining 4,000 miles of rail lines and 150 miles of airport runways, and installing a new air navigation system to reduce travel times and delays.
Obama also called for a permanent funding mechanism, an infrastructure bank, to focus on paying for national and regional infrastructure projects. Officials provided few details of how the bank would work.