Question: Which covered bridge in Columbia County , Pennsylvania has a central vertical post working in tension to support a beam below from a truss apex above ?

text: List of covered bridges in Columbia County, Pennsylvania
Table

As of 2007, there are a total of 21 covered bridges in Columbia County, Pennsylvania, in the United States. The number of covered bridges in Columbia County is the third highest number of covered bridges in any one county in Pennsylvania, behind Washington County and Lancaster County. Columbia County is also home to one of two sets of twin covered bridges in the United States. By 1962, a large number of the covered bridges in Columbia County were experiencing weathering. During this year, Columbia County began working on the preservation of the damaged bridges. There is an organization known as the Columbia County Covered Bridges Association that has existed since 1991 and supports the presence of covered bridges in the county. The county commissioner of Columbia County, Chris Young, is also a supporter of Columbia County's covered bridges, stating that When you stand on a covered bridge, you're actually going back in time. 18 of the covered bridges are open to vehicle traffic, as of 2002, and these are maintained by officials of Columbia County. The remainder of the bridges are maintained by the Columbia County Covered Bridges Association. A number of the covered bridges are attractions for local and regional tourism. They are also used for picnics and fishing. A number of the covered bridges were damaged during Tropical Storm Lee in 2011.
Name Date built Length Type Stream crossed
Creasyville Covered Bridge 1881 44.5 feet ( 13.6 m ) Queen post truss Little Fishing Creek
Davis Covered Bridge 1875 87 feet ( 27 m ) Burr Arch Roaring Creek
Esther Furnace Covered Bridge 1881 101 feet ( 31 m ) Queen post Roaring Creek
Fowlersville Covered Bridge 1886 40 feet ( 12 m ) Queen post West Branch Briar Creek ( later moved )
Hollingshead Covered Bridge No . 40 1851 116 feet ( 35 m ) Burr Arch Catawissa Creek
Johnson Covered Bridge No . 28 1882 61 feet ( 19 m ) Queen truss Mugser Run
Josiah Hess Covered Bridge No . 122 1875 110 feet ( 34 m ) Burr arch truss Huntington Creek
Jud Christie Covered Bridge No . 95 1876 63 feet ( 19 m ) Queen post truss Little Fishing Creek
Lawrence L. Knoebel Covered Bridge 1881 41 feet ( 12 m ) Queen truss West Creek ( later moved )
Kramer Covered Bridge No . 113 1881 50 feet ( 15 m ) Queen post Mud Run
Kreigbaum Covered Bridge 1876 62 feet ( 19 m ) Queen post South Branch Roaring Creek
Parr 's Mill Covered Bridge No . 10 1866 84 feet ( 26 m ) Burr Arch Roaring Creek
Patterson Covered Bridge No . 112 1875 82 feet ( 25 m ) Burr truss Green Creek
Richards Covered Bridge 1880 64 feet ( 20 m ) Modified multiple kingpost South Branch Roaring Creek
Rupert Covered Bridge No . 56 1847 185 feet ( 56 m ) Burr Arch truss Fishing Creek
Sam Eckman Covered Bridge No . 92 1876 66 feet ( 20 m ) Queen post truss Little Fishing Creek
Shoemaker Covered Bridge 1881 49 feet ( 15 m ) Queen post truss West Branch Run
Snyder Covered Bridge No . 17 1876 60.2 feet ( 18.3 m ) Burr Arch truss or Queen post truss Roaring Creek
Stillwater Covered Bridge No . 134 1849 151 feet ( 46 m ) Burr arch Fishing Creek
Twin Bridges-East Paden Covered Bridge No . 120 1884 112 feet ( 34 m ) and 75 feet ( 23 m ) Queen post and Burr arch Huntington Creek