of the Nation's Highways, Bridges, and Transit:
2002 Conditions and Performance Report
Projected Urban Interstate Pavement Condition in 2020 for Different Possible
Exhibit 23-16 includes a chart that shows projected urban interstate pavement conditions in 2020 for different possible funding levels. The vertical axis measures percent change from 2000 from -20 to 100 percent in increments of 20 percent. The horizontal axis measures average annual system preservation investment from $1.8 to $3.0 billion in increments of 0.2 billion. The line starts at 100 percent at $3.8 billion and declines steadily to 80 percent at $4.3 billion, 40 percent at $4.7 billion, 0 at $5.2 billion, and -20 percent at $5.4 billion.