About
Adair's Covered Bridge, also known as the Cisna Mill or Cisna Run Covered Bridge, crosses Shermans Creek east of Andersonburg in Southwest Madison Township, Perry County, near Blain. It is a Burr arch truss bridge built in 1864 and is 150 feet long, which Uncovering PA notes makes it the second longest covered bridge in the county after Dellville.
History
The bridge was built in 1864 and rebuilt in 1919, according to both Wikipedia and the Perry County PAGenWeb survey. No builder is recorded in these sources. It was listed on the National Register of Historic Places on August 25, 1980, as part of the Covered Bridges of Adams, Cumberland, and Perry Counties group.
Design
A Burr arch truss pairs a long timber arch with a multiple kingpost truss on each side of the bridge. The PAGenWeb survey records a width of 14.3 feet and rough vertical board siding.
Visiting
The bridge is on Legislative Route 50009, just south of Cisna Run and off Pennsylvania Route 274, between Andersonburg and Blain. Uncovering PA notes a pull-off on the north side of the bridge.
Sources: Adairs Covered Bridge (Wikipedia), Perry County Covered Bridges (PAGenWeb), Perry County Covered Bridges (Uncovering PA)
Photo: Smallbones, public domain, via Wikimedia Commons.
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