| Year | Concrete | Block | Wood | Metal | Berm | Brick | Combination | Absorptive |
|---|---|---|---|---|---|---|---|---|
| 1963-1993 | 2,676 | 2,270 | 985 | 201 | 343 | 78 | 1,143 | 110 |
| 1994 | 355 | 133 | 88 | 1 | 12 | 14 | 22 | 15 |
| 1995 | 523 | 190 | 21 | 23 | 25 | 10 | 143 | 3 |
| 1996 | 244 | 54 | 9 | 0 | 6 | 0 | 56 | 13 |
| 1997 | 566 | 208 | 1 | 0 | 4 | 0 | 52 | 0 |
| 1998 | 913 | 107 | 14 | 23 | 15 | 0 | 67 | 24 |
| 1999 | 319 | 11 | 22 | 6 | 5 | 0 | 52 | 5 |
| 2000 | 499 | 37 | 35 | 0 | 11 | 0 | 54 | 7 |
| 2001 | 722 | 60 | 34 | 80 | 0 | 12 | 32 | 5 |
| 2002 | 427 | 105 | 51 | 18 | 5 | 1 | 17 | 38 |
| 2003 | 492 | 160 | 2 | 4 | 1 | 0 | 76 | 28 |
| 2004 | 404 | 65 | 5 | 59 | 0 | 0 | 188 | 116 |
| Unknown | 23 | 0 | 0 | 14 | 0 | 0 | 7 | 0 |
| ALL | 8,164 | 3,399 | 1,267 | 428 | 428 | 115 | 1,910 | 363 |
NOTE: Square feet of noise barriers constructed with 'Other' materials - 1,811,622
