Lewis and Clark River Bridge

The Lewis and Clark River Bridge is a bascule bridge that spans the Lewis and Clark River on U.S. Route 101 Business (a section originally part of U.S. Route 101) in Clatsop County, Oregon. It was designed by Conde McCullough[1] and opened in 1925.[2] It was built to replace an earlier bridge at the same location,[3] a swing-span bridge constructed around 1910.

Lewis and Clark River Bridge
Coordinates	46.15229°N 123.85937°W
Carries	US 101 Bus.
Crosses	Lewis and Clark River
Locale	near Astoria, Oregon
Maintained by	Oregon DOT
Characteristics
Design	Single-leaf bascule
Total length	828 feet (252 m)
Longest span	112 feet (34 m)
History
Opened	1925
Location

The total length of the bridge is 828 feet (252 m), and the length of the bascule main span is 112 ft (34 m). The approach spans consist of a total of 48 timber pile and stringer spans.[4]

References

1. Hadlow (2001).
2. "New Span to Be Opened" (March 7, 1925). The Morning Oregonian (Portland), p. 1.
3. "About $11,000,000 Spent on Highways" (and section heading: "Bridges Are Built"). (December 9, 1923). The Sunday Oregonian, p. 13.
4. Hadlow (2001), p. 141.

Bibliography

• Hadlow, Robert W. (2001). Elegant Arches, Soaring Spans: C.B. McCullough, Oregon's Master Bridge Builder. Oregon State University Press. ISBN 0-87071-534-8.

External links

• Lewis and Clark River Bridge at Structurae
• Lewis & Clark Bridge, Spanning Lewis & Clark River at Milepoint 4.78, on Warrenton Highway (Highway No. 9), Astoria vicinity, Clatsop, OR at the Historic American Engineering Record (HAER)