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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Highway Noise Barrier Construction

Embedded Dataset Excel:

Dataset Excel:



Miles of noise barriers can neither be assigned a year of construction or a cost.

Miles of barriers, while assigned a year of construction, cannot be assigned a cost.


KEY: R = revised.

a  A Type I barrier is built on a new highway project or a physically altered existing highway.

b  A Type II barrier is built to abate noise along an existing highway (often referred to as retrofit abatement) and is not mandatory.

c All other types of barriers are nonfederally funded.

d Have not been assigned a year of construction or a cost.


U.S. Department of Transportation, Federal Highway Administration, Office of Planning, Environment, and Realty, Summary of Noise Barriers Constructed by December 31, 2019 (Washington, DC: June 2021), available at as of Oct. 13, 2021.