General Information
Project Type
| Structure: |
Double-leaf bascule bridge |
|---|---|
| Function / usage: |
Road bridge |
| Structure: |
Tied-arch bridge |
| Material: |
Reinforced concrete bridge Structurae Plus/Pro - Subscribe Now! bascule span: Steel bridge |
Location
| Location: |
Florence, Lane County, Oregon, USA |
|---|---|
| Crosses: |
|
| Carries: |
|
| Coordinates: | 43° 57' 52.79" N 124° 6' 30.96" W |
Technical Information
Dimensions
| total length | 477.92 m | |
| deck width | 8.23 m | |
| main bridge | ||
|---|---|---|
| span lengths | 47 m - 43 m - 47 m | |
| horizontal navigation clearance | 34 m | |
| arches | span lengths | 2 x 47 m |
| bascule span | span | 43 m |
| northern approach viaduct | ||
| total length | 145.69 m | |
| number of spans | 8 | |
| southern approach viaduct | ||
| total length | 196.90 m | |
| number of spans | 12 | |
Cost
| cost of construction | United States dollar 527 000 |
Materials
| piers |
reinforced concrete
|
|---|---|
| arches |
reinforced concrete
|
| deck of approach viaducts |
reinforced concrete
|
| bascule span |
steel
|
Excerpt from Wikipedia
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 1,568 feet (478 m). 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. 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 $9.6 million in 2018).
The bridge with ist bascule draw span openingThe bridge was added to the National Register of Historic Places on August 5, 2005.
Text imported from Wikipedia article "Siuslaw River Bridge" and modified on July 22, 2019 according to the CC-BY-SA 4.0 International license.
Participants
- Conde Balcom McCullough (designer)
Relevant Web Sites
Relevant Publications
- (1997): Bridges. A history of the world's most famous and important spans. Black Dog & Leventhal, New York (USA), pp. 80-81.
- (2017): Bridges. A History of the World's Most Spectacular Spans. 2nd edition, Black Dog & Leventhal, New York (USA), ISBN 978-0316507943, pp. 80-81.
- (1998): Brücken. Die Geschichte berühmter Brücken. Könemann, Cologne (Germany), pp. 80-81.
- (2001): Elegant Arches, Soaring Spans. C.B. McCullough Oregon's Master Bridge Builder. Oregon State University Press, Corvallis (USA), pp. 138.
- (1989): Historic Highway Bridges of Oregon. 2nd edition, Oregon Historical Society, Portland (USA), pp. 119.
- About this
data sheet - Structure-ID
20002399 - Published on:
18/11/2001 - Last updated on:
05/04/2020
