Ruth, if you go to the front page of the site, and click on the tab labeled "Categories" you'll be taken to a page called "Search by Category." There are several tabs there to choose from, the default is "Design."
Under the "Design" tab, click on the "C" and you'll be taken to the listings of designs that start with C, and click on "Covered."
You'll get a listing of the 640 (as of this writing) covered bridges listed on this site. I'm sure you'll be able to plan a route to see plenty of covered bridges!
(I'm kinda partial to the Colvin Covered Bridge in Bedford, County, Pennsylvania myself.) http://bridgehunter.com/pa/bedford/colvin-covered/
I love Covered Bridges. Why would anyone destroy a beautiful covered bridge. I have seen many covered bridges. They represent history from the past. I love looking for covered bridges on old roads. I have several books on covered bridges and I love them all. I live in northern Illinois. We don't have to many covered bridges in Il. I have to travel many miles to see any. Thanks for reading my message. A covered bridge lover.
Ruth
Ruth in answer to your question, my only answer is some people have so low of opinion of themselves, that they have to destroy things to bring themselves up. In Parke County, IN there was a guy arrested for setting fires to several bridges because he had nothing better to do. He wanted to hurt people by hurting things.