Adair’s Bridge, also known as Cisna Mill Brdige, was built in 1864 (builder unknown) and is the oldest bridge in Perry County. This Burr Arch Truss bridge is 176 feet long by 14 feet 3 inches wide and has an interior height of 11 feet 4 incehes. Planking is 3 inch boards laid crosswise. Reinforced with steel I-beams in 1919, the bridge was refurbished in 2007.
The bridge spans Sherman’s Creek at Cisna Run in Madison Township on SR3008 just off Rt274 two miles before Andersonburg and is owned by the Commonwealth of PA
Posted on the National Register of Historical Places August 25, 1980 NRHP Ref 80003594 and World Guide to Covered Bridges No. 38-50-04#2
GPS 40 21.04 N 77 25.4 W or 40.350686 -77.424249
From Interstate 81 (Exit67) take Rt 322/22 aproximately 20 miles to the Exit for Newport and New Bloomfield. Turn left at the end of the exit ramp onto Rt 34.
Travel 1 mile and cross the Juniata River on the old Iron Bridge, continuing straight through town (Market St) to the stop sign at the corner of 4th and Market St. Turn left and continue on Rt 34 for 5 miles to New Bloomfield.
At the Square in New Bloomfield continue straight through on Rt 274. Travel approximately 14.2 miles (2 miles before Andersonburg) and turn left at the crossroad on Crouchtown Road (T3008) and proceed 0.3 miles to the bridge.