A sound wall along Interstate 680 will reduce freeway noise for many residents, but not all. Those left out are not pleased and say it would not take much to fix the problem. Youngstown-based A.P.

The nonprofit Office for Public Art ... The additional costs associated with designing a unique sound barrier wall and the additional costs for fabrication are estimated at $150,000.

Bootstrap Business explains how much noise a sound barrier can really block. What to know about barriers blocking sounds on roads and highways.