During their heyday in the mid- to late 1800s, more than 150 covered bridges dotted the landscape of Connecticut and Rhode Island. Since that time, floods, fires, and progress have claimed all but three of the historic structures. Covered bridges were heavily concentrated in the hills of northwestern Connecticut, spanning the Farmington, Housatonic, and Naugatuck Rivers. In Rhode Island, most were built by the railroads in Woonsocket, Providence,...