Lycoming County has a total of four covered bridges. I visited two of them on my way home from Potter County.
The Buttonwood Bridge (also known as the Blockhouse Bridge) was built in 1898 with the structure spanning Blockhouse Creek. It uses a queen post with king post truss and is 74 feet 2 inches (22.6 m) long. The bridge is in good condition with a new wood shingled roof and pressure treated floor. The structure is open to traffic all year long. The bridge was placed on the National Register of Historic Places in 1980 and had a major restoration in 1998. It is the shortest and most heavily used of the three covered bridges remaining in Lycoming County.
The next bridge to the south was the Cogan House Bridge. This bridge was built in 1877 of the Burr Arch design with a structure length of 94 feet crossing Larry’s Creek. Cogan House bridge is open to traffic, and leads to a dead end private drive near the game lands. The bridge was placed on the National Register of Historic Places in 1980, and had a major restoration in 1998. The Cogan House bridge is named for the township and village of Cogan House, and is also known by at least four other names: Buckhorn, Larrys Creek, Day’s, and Plankenhorn.
The Cogan House Covered Bridge was constructed by a millwright who assembled the timber framework in a field next to the sawmill, before it was reassembled at the bridge site. It was the only bridge on Larrys Creek that survived the flood of June 1889, and one of only a handful that were left intact in the county. Although the bridge used to carry a steady flow of tannery and sawmill traffic, the clearcutting of the surrounding forests meant the end of those industries by the early 20th century.