Siuslaw River Bridge

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]

Siuslaw River Bridge
Coordinates	43°57′50″N 124°06′32″W
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
U.S. National Register of Historic Places
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Location	OR Coast 9, US101, MP109.98, Florence, Oregon
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 No.	05000816[1][2]
Added to NRHP	August 5, 2005[1]
Location

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 $9.8 million in 2019[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]