Thanks to Roy for the link. I sent it to the History Channel along with the following message. We'll see if I get any response.
On Wednesday, November 16, your Modern Marvels show was about bridges. It was a really good show, but there was just one mistake. When you mentioned John Roebling and his improvements to the suspension bridge, you mentioned the bridge in New York as the prototype for his new design. In reality, he built the first bridge according to that design over the Ohio River between Cincinnati, Ohio and Covington, KY. That bridge was completed in 1866 and was the prototype he used for the bridge he later built in Brooklyn. I really enjoy most of your programming, but this disappointed me. Since I know you value the quality and accuracy of your programs, I trust that you will address this. Here is a link for some further information. http://en.wikipedia.org/wiki/Roebling_Bridge