I think most city infrastructure is a wreck. This is because 75 years ago they had plenty of residents making good money to tax to pay for their upkeep (like China is today). However when incomes rose and people could afford to move out of multiunit apartments into single family homes in the new suburbs; cities lost their primary tax base and were left with high levels of low income people. This increased their social services cost and depleted their revenue streams. This killed their budgets leading to infrastructure degradation.