Hazard alert

There is an axle/suspension-breaking hazard near the beginning of Hamilton Avenue off East Liberty Boulevard. It is a sharp drop from roadwork that was done but the road surface was not repaired. I am sure if this was in a fancier neighborhood, it would have been repaired or at least earned a caution sign. There is NO warning. You can do damage to your auto if taken at full speed. How can we let the City aware of this? Frank Czuri 6534 Jackson St Pittsburgh, PA 15206