External links Webpage dedicated to the Foxburg Bridge and other historic bridges Bridges over the Allegheny River Railroad bridges in Pennsylvania Demolished bridges in the United States Demolished buildings and structures in Pennsylvania Truss bridges in the United States Bridges completed in 1921 Road bridges in Pennsylvania Road-rail bridges in the United States Former toll bridges in Pennsylvania Buildings and structures demolished in 2008 1921 establishments in Pennsylvania 2008 disestablishments in Pennsylvania Steel bridges in the United States Bridges in Clarion County, Pennsylvania Bridges in Armstrong County, Pennsylvania