Why do wealthy American cities have such dirty streets and filthy highways?

I have been to several wealthy cities in the United States in various states, and noticed that many of them have dirty streets/highways. I’m talking about cities that are very wealthy and have wealthy suburbs, cities that are as rich as cities in Europe. <br><br>For example, Pittsburgh, Pennsylvania has a GDP of around $175 billion despite having only 302,400 people. It’s suburbs are quite wealthy. Yet, when I go for a walk I see trash all over the ground. The city hasn’t really invested in any clean up systems. Many of the wealthy suburb’s streets don’t even have curbs on them. The local transit authority (Put North) is one of the cleanest and best in the country. Yet, the local government hasn’t invested in cleaning the streets or in other basic infrastructure. <br><br>Another example is Kansas City, Missouri. It’s a city in a wealthy state with a wealthy suburb. It’s home to a lot of wealthy companies and it has several wealthy suburbs with wealthy residents. However, a lot of the city’s streets are covered in trash, and the infrastructure in the city is quite bad. There is a shortage of crosswalks, many streetlights in the city aren’t even working, etc. <br><br>Any idea why American cities like these two have such dirty streets?