Pennsylvania Railroad District
Pennsylvania Railroad District , also known as Conrail: Little Juniata River Bridges and Tunnels or Bridges and Tunnels ( Spruce Creek to Birmingham Section , Little Juniata River ) , is a national historic district located in Spruce Creek Township , Morris Township , and Warriors Mark Township in Huntingdon County , Pennsylvania and Tyrone Township in Blair County , Pennsylvania . 
<triplet> Spruce Creek Township <subj> Huntingdon County, Pennsylvania <obj> located in the administrative territorial entity <triplet> Morris Township <subj> Huntingdon County, Pennsylvania <obj> located in the administrative territorial entity <triplet> Warriors Mark Township <subj> Huntingdon County, Pennsylvania <obj> located in the administrative territorial entity <triplet> Tyrone Township <subj> Blair County, Pennsylvania <obj> located in the administrative territorial entity <triplet> Blair County, Pennsylvania <subj> Huntingdon County, Pennsylvania <obj> shares border with