Siuslaw River Bridge

Bridge in Florence, Oregon
43°57′50″N 124°06′32″W / 43.964°N 124.109°W / 43.964; -124.109Carries US 101CrossesSiuslaw RiverLocaleFlorence, OregonMaintained byODOTCharacteristicsDesignDouble tied-arch with central bascule draw spanTotal length1,568 feet (478 m)Longest span140 feet (43 m)HistoryOpenedMarch 31, 1936
Siuslaw River Bridge No. 01821
Siuslaw River Bridge is located in Oregon
Siuslaw River Bridge
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Siuslaw River Bridge is located in the United States
Siuslaw River Bridge
Show map of the United States
LocationOR Coast 9, US101, MP109.98, Florence, OregonArea2.2 acres (0.89 ha)Built1935–36Built byMercer-Fraser CompanyArchitectConde B. McCulloughArchitectural styleLate 19th and 20th Century Revivals, Modern MovementMPSMcCullough, C. B., Major Oregon Coast Highway Bridges MPSNRHP reference No.05000816[1][2]Added to NRHPAugust 5, 2005[1] LocationMap

The Siuslaw River Bridge is a bascule bridge that spans the Siuslaw River on U.S. Route 101 in Florence, Oregon. It was designed by Conde McCullough, built by the Mercer-Fraser Company of Eureka, California, and funded by the Federal Emergency Administration of Public Works (later renamed the Public Works Administration). It opened in 1936.[3]

The bridge's total length is 1,568 feet (478 m).[3] When open, the 140-foot (43 m) double-leaf bascule provides 110 feet (34 m) of horizontal clearance for boat traffic. The bascule section is flanked by two 154-foot (47 m) reinforced concrete tied arches, identical to those used in the original Alsea Bay Bridge.[3] Four Art Deco-style obelisks house mechanical equipment as well as living quarters for the bridge operator.[3] The total cost of the bridge was $527,000 (equivalent to $11.7 million in 2023[4]).

The bridge with its bascule draw span opening

The bridge was added to the National Register of Historic Places on August 5, 2005.[1]

See also

References

  1. ^ a b c "Oregon National Register List" (PDF). Oregon Parks and Recreation Department. June 6, 2011. p. 22. Retrieved June 7, 2013.
  2. ^ "National Register Information System". National Register of Historic Places. National Park Service. July 9, 2010.
  3. ^ a b c d Hadlow, Robert W. (2001). Elegant Arches, Soaring Spans: C. B. McCullough, Oregon's Master Bridge Builder. Oregon State University Press. pp. 93–94, 105, 138. ISBN 0-87071-534-8.
  4. ^ 1634–1699: McCusker, J. J. (1997). How Much Is That in Real Money? A Historical Price Index for Use as a Deflator of Money Values in the Economy of the United States: Addenda et Corrigenda (PDF). American Antiquarian Society. 1700–1799: McCusker, J. J. (1992). How Much Is That in Real Money? A Historical Price Index for Use as a Deflator of Money Values in the Economy of the United States (PDF). American Antiquarian Society. 1800–present: Federal Reserve Bank of Minneapolis. "Consumer Price Index (estimate) 1800–". Retrieved February 29, 2024.
  • Media related to Siuslaw River Bridge (Florence, Oregon) at Wikimedia Commons
  • Historic American Engineering Record (HAER) No. OR-58, "Siuslaw River Bridge, Spanning Siuslaw River at Oregon Coast Highway, Florence, Lane County, OR", 25 photos, 2 color transparencies, 7 data pages, 4 photo caption pages
  • Siuslaw River Bridge at Structurae
  • Video of bridge's bascule span open on YouTube
Authority control databases: Geographic Edit this at Wikidata
  • Structurae


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