Jackson's Mill Covered Bridge
Washington County, Pennsylvania 
(WGN 38-63-18)  (WGCB PA-63-18)  (Date built unknown)  A single-span Queenpost truss 46' 2" over King's Creek.  Located:  On Kingscreek Road, approximately 1.4 miles north of Hamilton, Pennsylvania, 4.5 miles west of Florence, Hanover Township, Pennsylvania.  Directions:  Starting at the Hanover Township Building (location of the McClung Covered Bridge [WGN 38-63-13]), go west on Old Steubenville Pike (SR 4004) for 2.2 miles to Phillips Road.  Turn right on Phillips Road for 1 mile to Kingscreek Road.  Continue straight on Kingscreek Road for 0.4 mile to the bridge.  The bridge has outlived any record of its construction date.  However, there is record that a petition was filed in 1865 for a bridge to be built at the site.  In many counties, bridge records were not kept, as is the case in Washington County.  It is rumored that the bridge was named after William Jackson who owned a Grist Mill near the bridge site in the 1870 and 1880s.  The bridge is covered with vertical board siding on both sides and portals, painted barn red both inside and out, a roof of sheet metal, and a deck of crosswise planking.  The sides have two windows located at the ends in addition to the eave openings.  The deck is reinforced with wooden, trestle-type supports which rest in the streambed.  The structure rests on cut stone and mortar abutments laid up on concrete footings that are extended to form stone and mortar wing walls.  One of the wing walls has been replaced with concrete.  It was listed on the National Register of Historic Places on June 22, 1979.  (Oct 2005) 
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