The additional costs associated with designing a unique sound barrier wall and the additional costs for fabrication are estimated at $150,000. The overall estimated cost for the whole highway ...

leaving about a 4-inch air gap to the outer wall. This creates a barrier that significantly reduces sound transmission.' ...

BANNING, CA — Banning's Opportunity Village, a collection of 20 pallet homes lining the freeway between Lincoln and Bryant streets, will soon be obscured by a sound wall barrier, according to ...

Residents of Atlanta’s Westside neighborhoods are calling on government officials to build five miles of sound barrier wall along Interstate 20 to shield their community from noise, debris and ...

Free-fall through the sound barrier. In a computer animation ... he'll have to break through what's known as the transonic wall. This is the moment when some parts of Felix's body begin to ...