Table 2
Noise Barrier Construction
Average Unit Cost By Year
| Year | Area in Square Feet (100,000) |
2004 Cost ($Millions) |
Cost Per Square Foot (Dollars) |
|---|---|---|---|
| 1963-1983 | 211 | 329 | 16 |
| 1984 | 32 | 67 | 21 |
| 1985 | 28 | 57 | 20 |
| 1986 | 41 | 106 | 26 |
| 1987 | 36 | 72 | 20 |
| 1988 | 70 | 168 | 24 |
| 1989 | 74 | 163 | 22 |
| 1990 | 52 | 108 | 21 |
| 1991 | 80 | 176 | 22 |
| 1992 | 104 | 228 | 22 |
| 1993 | 64 | 144 | 23 |
| 1994 | 65 | 135 | 21 |
| 1995 | 95 | 203 | 21 |
| 1996 | 42 | 79 | 19 |
| 1997 | 83 | 180 | 22 |
| 1998 | 118 | 242 | 21 |
| 1999 | 42 | 110 | 26 |
| 2000 | 65 | 147 | 23 |
| 2001 | 95 | 207 | 22 |
| 2002 | 67 | 190 | 29 |
| 2003 | 77 | 171 | 22 |
| 2004 | 86 | 159 | 19 |
| Unknown | 4 | 0 | 0 |
| ALL | 1,626 | 3,442 | 21 |
