US Has Enough ‘Highway Sound Barrier’ Walls to Protect the Entire Southern Border Nearly One and a Half Times
The US has enough highway sound barriers (walls) to protect the entire southern border nearly one and a half times.
The US Bureau of Transportation reports that in 2019 the US had 3,332 miles of highway sound barriers (walls) in place around the country.
One report describes the sound barriers created next to US highways as such:
The concept of the sound barrier and how it works is remarkably simple. In fact, it is one of the simplest solutions in the entire field of acoustics. It is a wall: a hard surface made of wood, concrete, brick, or other reflective, strong and durable material.
These walls protect Americans from unwanted sound.
