: A photograph of a covered bridge over Deer Creek. The caption reads: "Covered Bridge North of Chillicothe on State Route 104." Ohio has a large number of covered bridges, falling second only to Pennsylvania in quantity. Within the state of Ohio, Fairfield County and Ashtabula County lead the state in containing the most original covered bridges. Most covered bridges in the U.S. were built between 1825 and 1875, with the first Ohio covered bridge built in 1829 in Eaton in Preble County. Bridges were covered to protect the structural wooden tresses from the elements, giving the bridges a longer life span of approximately 100 years as opposed to 20 years for an uncovered bridge. At one point in time, Ohio had approximately 3,500 covered bridges, but that number has diminished to approximately 138 covered bridges today. View on Ohio Memory.
: SA1039AV_B01F17_005 Subjects
: Transportation--Ohio--History.; Architecture--Ohio--Pictorial works.; Bridges Ohio; Chillicothe (Ross County, Ohio)--History; Covered Bridges Ohio Places
: Chillicothe (Ohio); Ross County (Ohio)