“Public spending—spending by federal, state, and local governments—on transportation and water infrastructure totaled $416 billion in 2014. Most of that spending came from state and local governments: They provided $320 billion, and the federal government accounted for $96 billion. This report provides information on spending for six types of transportation and water infrastructure:

• Highways,
• Mass transit and rail,
• Aviation,
• Water transportation,
• Water resources, and
• Water utilities.

Such spending can also be divided into two broad categories—spending to purchase physical capital related to infrastructure (as well as the labor and other inputs necessary for improving and rehabilitating structures and equipment already in place) and spending to operate and maintain infrastructure. In 2014, spending for capital accounted for 43 percent of total public spending on transportation and water infrastructure, and spending for operation and maintenance for 57 percent.”