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Youngs Bay Bridge

Youngs Bay Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: September 1, 2018

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Key Facts

Facility Carried / Feature Intersected
Business US-101 (Warrenton-Astoria Highway) Over Youngs Bay
Location
Astoria: Clatsop County, Oregon: United States
Structure Type
Metal Rivet-Connected Pratt Deck Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Wood Stringer (Multi-Beam), Fixed
Construction Date and Builder / Engineer
1921 By Builder/Contractor: Gilpin Construction Company of Portland, Oregon and Engineer/Design: Conde Balcom McCullough (Oregon State Highway Commission)

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
166 Feet (50.7 Meters)
Structure Length
1,845 Feet (562.4 Meters)
Roadway Width
20.3 Feet (6.19 Meters)
Spans
1 Main Span(s) and 58 Approach Span(s)
NBI Number
330

Historic Significance Rating (HSR)
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Bridge Documentation

View Archived National Bridge Inventory Report - Has Additional Details and Evaluation

View Historic American Engineering Record (HAER) Documentation For This Bridge

HAER Data Pages, PDF

View Historic Bridge Inventory Sheet For This Bridge

View Historical Article About This Bridge

This bridge was designed by noted engineer Conde McCullough. It has decorative pillars at the ends of the bridge as well as decorative railings, as many McCullough bridges do. However this bridge is unusual because the approach span railings and the pillars are composed of a combination of concrete and wood. Wood and concrete are rarely found together like this on a bridge. Also unusual is that the wood is not a simple structural part of the railing, but has been carved into ornate designs. Usually if a railing is wood, it is a simple railing.

The main bascule span consists of a Chicago style double-leaf fixed trunnion deck truss, of traditional appearance and design, with the exception that at the center of the span, the trusses give way to solid plate. It is an aesthetically pleasing arch-shaped design.

The contractor for this bridge was listed as Gilpin Construction Company of Astoria. This is assumed to be the same company that is usually noted as being located in Portland, Oregon. It appears the company began in Astoria and moved to Portland.

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Photo Galleries and Videos: Youngs Bay Bridge

 
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Maps and Links: Youngs Bay Bridge

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