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Dr. John McLoughlin Memorial Bridge

McLoughlin Bridge

Dr. John McLoughlin Memorial Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: August 23, 2014

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Key Facts

Facility Carried / Feature Intersected
OR 99E (McLoughlin Boulevard) Over Clackamas River
Gladstone: Clackamas County, Oregon: United States
Structure Type
Metal Tied Solid Ribbed Through Arch, Fixed and Approach Spans: Concrete Curved T-Beam, Fixed
Construction Date and Builder / Engineer
1933 By Builder/Contractor: Lindstrom and Feigenson 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
240 Feet (73.15 Meters)
Structure Length
730 Feet (222.5 Meters)
Roadway Width
4 Feet (1.22 Meters)
3 Main Span(s) and 4 Approach Span(s)
NBI Number

Historic Significance Rating (HSR)

Bridge Documentation

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

View Historic Resource Inventory Sheet For This Bridge

This bridge is an impressive steel arch bridge. It retains original decorative concrete railings and decorative pylons at the ends of the bridge. Although trees today somewhat obscure them, a journey underneath the bridge will reveal impressive curved t-beam approach spans supported by ornate concrete piers. The bridge was designed by the Oregon State Highway Commission under the direction of noted engineer Conde McCullough, who placed emphasis on designing bridges with substantial aesthetic details.

Information and Findings From Oregon's Historic Bridge Inventory


Three steel tied through arch spans with a total length of 720-ft


Lindstrom and Feigenson


This bridge won an Award for Merit in 1933 from the American Institute of Steel Construction and is the largest crossing built as part of the major realignment of the Pacific Highway between Oregon City and Portland. The design includes decorative entry pylons. The bridge was dedicated to Dr. John McLoughlin, a leading figure in the development of the modern Pacific Northwest.

Bridge Considered Historic By Survey: Yes


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