Ben Franklin Bridge turns 100 with the rare chance to walk across its travel lanes

Now that the tall ships have sailed elsewhere, and the spectacle of July 4 fireworks is also a memory, a mighty bridge that ...
PBS

Build a Bridge

Now that you’ve looked at the sites, you’ll want to review four basic types of bridges so that you make the right choice for the site. Below, learn more about arch, beam, suspension, and cable-stayed ...