Big Conestoga Creek Bridge No. 12, Spanning Conestoga River at Farmersville Road (State Route 1010), Brownstown, Lancaster County, PA

Significance: Big Conestoga Creek Bridge No. 12 is a rare combination of cantilever, arch and through-girder forms in reinforced concrete. Lancaster County engineer Frank H. Shaw, designing to meet economic constraints, site conditions, and political pressure, crafted this unusual solution in a short window of opportunity before the advent of state standards for reinforced concrete bridges. Its main span of 62'-5" is flanked by two 31'-0" cantilever arms whose tips do not rest upon the concrete abutments, which probably enclose stone abutments from a previous bridge. Of six similar structures designed by Shaw, this is one of two which remain in the state highway system. This bridge was listed on the National Register of Historic Places in 1988.
Unprocessed Field note material exists for this structure: N611
Unprocessed Field note material exists for this structure: N982
Survey number: HAER PA-500
Building/structure dates: 1917 Initial Construction
National Register of Historic Places NRIS Number: 88000875