The plank road was operational for about 38 years when a major flood on June 1 , 1889 washed out much of it . The flood also destroyed the canal at the creek 's mouth . The same storm system caused the Johnstown Flood , which killed over 2200 people . The Cogan House Covered Bridge was the only one on Larrys Creek to survive the flood , as a fallen tree formed a protective dam just upstream . The 90 foot ( 27 m ) long Burr arch truss bridge was built in 1877 , listed on the National Register of Historic Places in 1980 , rehabilitated in 1998 , and is today one of just three left in the county
Johnstown Flood
Johnstown Flood
Larrys Creek