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Summary of Noise Barriers Constructed by December 31, 2010

Noise Barrier Construction by Height

Height Linear
Length
(miles)		 % of Total
< 6 feet 33.5 1.2%
6 to 8 feet214.6 7.8%
9 to 11 feet 457.3 16.6%
12 to 14 feet 846.4 30.8%
15 to 17 feet 638.9 23.2%
18 to 20 feet 378.4 13.8%
> 20 feet 168.1 6.1%
 
All 2,748100%
Updated: 07/11/2012
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