Significant Contexts
National Register Criteria of Eligibility
Integrity
Potential Eligibility of Small Structure Types
     Masonry
     Concrete
     Concrete Slab
     Concrete Box Culvert
     Concrete Girder (Beam)
     Concrete Arches and Arched Culverts
     Concrete Rigid Frame
     Metal
     Timber
     Pipes and Pipe Arches
Summary of National Register Eligibility