From the Cuyahoga Valley National Park Website at http://www.nps.gov/cuva/historyculture/everett-road-covered-bridge.htm
"Everett Road Covered Bridge, which crosses Furnace Run, is the only remaining covered bridge in Summit County. But in the 19th century, it was one of over 2,000 in Ohio, the state that led the nation in covered-bridge construction.
The bridge played an important role in the 19th-century transportation system. Local histories emphasize the role of the Ohio & Erie Canal. With the canal, farmers could ship products to Cleveland and beyond. But to get to the canal and other local destinations, people needed functional roads."