Singing Bridge - Credit: Wikimedia Commons
The Singing Bridge (also known as the St. Clair Street bridge) is a two-lane vehicle and pedestrian bridge in Frankfort, Kentucky that is so named because of the humming sound it makes when driven over. , the bridge carries over 5,000 vehicles per day across the Kentucky River along St. Clair Street to Bridge Street, joining Downtown Frankfort with South Frankfort. It is a contributing structure to the Frankfort Commercial Historic District on the National Register of Historic Places. Read more on Wikipedia
Source: en.wikipedia.org