Lindenthal advised against re-using the Burnside Bridge spans at Sellwood and he also criticized the design of the proposed Ross Island Bridge (The Oregonian, Aug. 5, 1924).
Lindenthal recommended that the new Sellwood Bridge employ an uncommon design: a steel four-span continuous riveted Warren Deck Truss with verticals. The design would make the Sellwood the only bridge of its kind in Oregon, and an extremely rare bridge type anywhere in the world (Wood Wortman, HAER-103). The Sellwood Bridge would be Portland’s first high bridge without a movable span and the first Portland bridge to be designed without trolley tracks - almost entirely devoted to automobile traffic.
Further Reading...
- Wortman, Sharon Wood, and Edward J. Wortman, P.E. Historic American Engineering Record, Sellwood Bridge. HAER No. OR-103. 2000.
- McNeet, James, and Aaron Lemchen. Addendum to Sellwood Bridge Historical American Engineering Record. HAER No. OR-103. 2011.
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