Siuslaw River Bridge

Siuslaw River Bridge
Carries US 101
Crosses Siuslaw River
Locale Florence, Oregon
Maintained by ODOT
Characteristics
Design Double tied-arch with central bascule draw span
Total length 1,568 feet
Longest span 140 feet
History
Opened

March 31, 1936

Siuslaw River Bridge No. 01821
Location OR Coast 9, US101, MP109.98, Florence, Oregon
Coordinates 43°57′52″N 124°6′31″W / 43.96444°N 124.10861°W / 43.96444; -124.10861Coordinates: 43°57′52″N 124°6′31″W / 43.96444°N 124.10861°W / 43.96444; -124.10861
Area 2.2 acres (0.89 ha)
Built 1935–36
Built by Mercer-Fraser Co.
Architect Conde B. McCullough
Architectural style Late 19th and 20th Century Revivals, Modern Movement
MPS McCullough, C.B., Major Oregon Coast Highway Bridges MPS
NRHP Reference # 05000816[1][2]
Added to NRHP August 5, 2005[1]

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 $9.2 million in 2016[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. 1 2 3 "Oregon National Register List" (PDF). Oregon Parks and Recreation Department. June 6, 2011. p. 22. Retrieved June 7, 2013.
  2. ↑ National Park Service (2010-07-09). "National Register Information System". National Register of Historic Places. National Park Service.
  3. 1 2 3 4 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. ↑ Federal Reserve Bank of Minneapolis Community Development Project. "Consumer Price Index (estimate) 1800–". Federal Reserve Bank of Minneapolis. Retrieved January 2, 2017.


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