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Noise Barriers Construction Trends

By Height

 
Height Linear Length (miles) % of Total
< 6 feet 16.9 0.8%
6 to 8 feet 194.3 8.8%
9 to 11 feet 427.3 19.4%
12 to 14 feet 667.0 30.3%
15 to 17 feet 483.7 21.9%
18 to 20 feet 294.3 13.3%
> 20 feet 121.4 5.5%
ALL 2,205 100%
Updated: 7/14/2011
HEP Home Planning Environment Real Estate
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000