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Noise Barriers Construction Trends

By Year

 
Year Linear Length of
Noise Barriers
(Miles)
Actual Cost
($Millions)
2004 Cost
($Millions)
1963-1983 328 173 329
1984 54 40 67
1985 45 37 57
1986 65 70 106
1987 54 46 72
1988 106 116 168
1989 103 114 163
1990 64 76 108
1991 99 122 176
1992 143 155 228
1993 88 101 144
1994 89 101 135
1995 133 160 203
1996 54 62 79
1997 102 152 180
1998 140 199 242
1999 54 98 110
2000 82 138 147
2001 132 194 207
2002 78 182 190
2003 89 166 171
2004 105 159 159
Unknown 6 0 0
ALL 2,205 2,662 3,442

NOTE:
Miles of noise barriers that can neither be assigned a year of construction nor a cost - 6
Miles of barriers, while assigned a year of construction, cannot be assigned a cost - 45

Updated: 7/14/2011
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