In 2013, $19 billion in federal funds were obligated, and 65,500 miles of federal-aid roadway projects were implemented.
Obligation of Federal Funds for Roads (2013)
Sixty-seven percent of the obligated funds went towards system preservation, new construction comprised nine percent, and additional capacity projects received 24 percent.
Miles of Federal-Aid Roadway Projects (2013)
Ninety-one percent of the project miles involved system preservation, five percent of the miles involved new construction, and four percent involved additional capacity.
Source: Federal Highway Administration, Highway Statistics 2011, Table FA-10, Obligation of Federal-Aid Highway Funds for Highway Improvements, http://www.fhwa.dot.gov/policyinformation/statistics/2011/fa10.cfm
Note: This chart excludes funds and miles related to safety and environmentally related projects, and new bridges and bridge replacement/rehabilitation.