| 词条 | Conestoga Creek Viaduct |
| 释义 |
|bridge_name = Conestoga Creek Viaduct |image = |caption = |official_name = |carries = Amtrak Keystone Service |crosses = Conestoga River and PA 23 (East Walnut Street) |locale = Lancaster, Pennsylvania, USA |maint = |id = |designer = |design = Arch bridge |material = Stone |spans = 5 |pierswater = 3 |mainspan = {{convert|55|ft|m}} |length = {{convert|330|ft|m}} |width = two tracks |height = |load = |clearance = |below = |traffic = |begin = 1887 |complete = 1888 |open = |coordinates = {{coord|40|03|00|N|76|16|41|W|region:US-PA|display=inline,title}} | map_type = USA Pennsylvania }} The Conestoga Creek Viaduct spans the Conestoga River east of Lancaster, Pennsylvania. The present structure, built in 1887-88, is a five-span, two-track stone arch railroad bridge. The first crossing at this location was a {{convert|1412|ft|m}} series of 11 wooden Town lattice trusses constructed in 1829 for the Columbia and Philadelphia Railroad, which was purchased by the Pennsylvania Railroad (PRR) and incorporated into its main line in 1857.[1] PRR shortened the viaduct and replaced the remaining wooden trusses with iron Whipple trusses in 1863. The 1887-88 stone arch replacement was originally intended to be four tracks wide, but only half of the superstructure width (two tracks) was constructed, leaving an unfinished spandrel wall on the southern face. Tie rods were added in 1930 to brace the spandrel walls.[2] See also
References1. ^{{cite journal |last=Zimmerman |first=Albright |year=1984 |title=The Columbia and Philadelphia Railroad: A Railroad with an Identity Problem |journal=Canal History and Technology Proceedings |volume=3 |pages=62–63}} 2. ^{{cite web |url=https://cdn.loc.gov/master/pnp/habshaer/pa/pa3700/pa3740/data/pa3740data.pdf |title=Pennsylvania Railroad, Conestoga Creek Viaduct |last=Spivey |first=Justin M. |date=April 2000 |website=Historic American Engineering Record |publisher=Library of Congress |location=Washington, D.C. |page=3 |accessdate=March 3, 2018}} External links
9 : Bridges completed in 1888|Bridges in Lancaster County, Pennsylvania|Bridges over the Conestoga River|Pennsylvania Railroad bridges|Railroad bridges in Pennsylvania|Historic American Engineering Record in Pennsylvania|Viaducts in the United States|Stone arch bridges in the United States|1888 establishments in Pennsylvania |
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