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. The bridge's total length is . When open, the double-leaf bascule provides of horizontal clearance for boat traffic. The bascule section is flanked by two reinforced concrete tied arches, identical to those used in the original Alsea Bay Bridge. Four Art Deco-style obelisks house mechanical equipment as well as living quarters for the bridge operator. The total cost of the bridge was $527,000 (equivalent to $ million in ). The bridge was added to the National Register of Historic Places on August 5, 2005. See also List of bridges documented by the Historic American Engineering Record in Oregon List of bridges on the National Register of Historic Places in Oregon List of bridges on U.S. Route 101 in Oregon References External links Bridges completed in 1936 Bascule bridges in the United States Road bridges on the National Register of Historic Places in Oregon Public Works Administration in Oregon U.S. Route 101 National Register of Historic Places in Lane County, Oregon Bridges in Lane County, Oregon Tied arch bridges in the United States Art Deco architecture in Oregon Historic American Engineering Record in Oregon Bridges by Conde McCullough Bridges of the United States Numbered Highway System 1936 establishments in Oregon Drawbridges on the National Register of Historic Places Concrete bridges in the United States