of the Nation's Highways, Bridges, and Transit:
2002 Conditions and Performance Report
NHS Component of Cost to Maintain Highways and Bridges (Billions of 2000 dollars)
Exhibit 24-10 includes a pie chart that shows NHS components of cost to maintain highways and bridges in 2000 dollars. 52.9 percent was for system expansion, 40.6 for system preservation, and 6.6 for system enhancement.