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Summary of Noise Barriers Constructed by December 31, 2010

Type I and Type II Noise Barrier Construction by Year

Year Type I
Linear
Length
(miles)
Type II
Linear
Length
(miles)
Type I
(%)
Type II
(%)
1963-1989 507 198 72% 28%
1990 44 19 70% 30%
1991 78 18 81% 19%
1992 113 18 86% 14%
1993 63 21 75% 25%
1994 48 16 75% 25%
1995 93 32 74% 26%
1996 37 15 72% 28%
1997 67 31 68% 32%
1998 119 23 84% 16%
1999 31 18 64% 36%
2000 67 11 86% 14%
2001 72 18 80% 20%
2002 59 13 82% 18%
2003 76 4 94% 6%
2004 99 15 87% 13%
2005 56 10 85% 15%
2006 80 13 86% 14%
2007 57 19 76% 24%
2008 38 3 94% 6%
2009 63 5 93% 7%
2010 70 13 84% 16%
Unknown 6 0 100% 0%
 
All1,93853378%22%

Total Types I and II - 2,471
Total All Other Types - 264
Total Types I and II Plus - 2,735
All Other Types

Updated: 07/11/2012
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