Historical Marker
McColly Covered Bridge - 1876
Historical marker location:
9134 McColly Bridge Pike, De Graff, Ohio
( Marker is at the intersection of McColly Bridge Pike (County Road 13) and Meranda Road (County Road 59), in the median on McColly Bridge Pike.)
Marker installed: 2000
Great Miami River. Cost - $693,764.12.
Ohio played a key role in the development of the modern steel industry. Andrew Carnegie, one of the most famous industrialists of the late 19th and early 20th centuries, started his career in the steel industry in Pittsburgh, Pennsylvania, but his first major investment was in a steel mill in Braddock, Ohio.