Philadelphia & Reading Railroad, Susquehanna River Bridge, Spanning Susquehanna River, North of I-83 Bridge, Harrisburg, Dauphin County, PA

Significance: The structure is significant as a late example of a reinforced concrete arch design by the Philadelphia & Reading Railroad, and perhaps the longest such structure on the former P&R system. Its design, falsework, and construction embody refinements developed during nearly 2 decades of experience with the material. The P&R's bridge also provides an important contrast to a nearby Pennsylvania Railroad bridge, reflecting the differing design philosophies of competing lines.

Unprocessed Field note material exists for this structure: N603

Survey number: HAER PA-523

Building/structure dates: 1889-1891 Initial Construction

Building/structure dates: 1920-1924 Subsequent Work

concrete arch bridges railroad bridges bridge construction railroad companies transportation harrisburg philadelphia railroad susquehanna bridge susquehanna river bridge susquehanna river dauphin county rail road tracks pennsylvania cumberland county percival s baker blaw knox company consolidated rail corporation conrail eric n delony historic american engineering record james mcgraw company jet lowe nolan brothers norfolk southern railroad pennsylvania historical and museum commission philadelphia and reading railroad harrisburg and pittsburgh railroad philadelphia south pennsylvania railroad justin m spivey incorporated t l eyre samuel t wagner photo i 83 bridge ultra high resolution high resolution library of congress

1969 - 1980

Library of Congress

http://www.loc.gov/

No known restrictions on images made by the U.S. Government; images copied from other sources may be restricted. http://www.loc.gov/rr/print/res/114_habs.html