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Van Buren Street Bridge

Van Buren Street Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: September 2, 2018

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Key Facts

Facility Carried / Feature Intersected
OR-34 Eastbound (Van Buren Street) Over Willamette River
Corvallis: Benton County, Oregon and Linn County, Oregon: United States
Structure Type
Metal 13 Panel Pin-Connected Pratt Through Truss, Fixed and Approach Spans: Metal 3 Panel Rivet-Connected Polygonal Warren Pony Truss,
Construction Date and Builder / Engineer
1913 By Builder/Contractor: Coast Bridge Company of Portland, Oregon and Engineer/Design: Andrew J. Potter

Technical Facts

Rehabilitation Date
Main Span Length
249 Feet (75.9 Meters)
Structure Length
708 Feet (215.8 Meters)
Roadway Width
18.5 Feet (5.64 Meters)
1 Main Span(s) and 14 Approach Span(s)
NBI Number

Historic Significance Rating (HSR)
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Bridge Documentation

This bridge's future is at risk!

Bridge Status: This bridge is at risk for demolition and replacement by ODOT!

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

View Historic Bridge Inventory Sheet For This Bridge

This bridge is the oldest highway swing bridge in Oregon and the only pin-connected movable highway bridge in Oregon. The swing span is in fact composed of a combination of riveted and pinned connections. West of the swing span is an all-pinned Parker truss span. East of the swing span is an all-riveted polygonal Warren pony truss span (an early example of polygonal Warren design) that is unusual for its short length and only a total of four different slopes on the endpost/top chord system (less than even the five slopes of a Camelback truss). There once was a similar pony truss span at the western end of this bridge, but that has been mostly replaced with a stringer beam system, although some of the floorbeams and connections of the pony truss were left behind, resulting in a rather unusual appearance in the westernmost spans of this bridge, which are visible in detail from the walkway that passes under these approach spans.

Note that the sway bracing on the through truss spans was altered at some point to increase vertical clearance. Although this bridge does not operate for boats anymore, the swing span retains the integrity of its design to allow it to retain high significance, especially considering the rarity of this type of bridge in Oregon.

This bridge only carries eastbound traffic today, with a nearby newer bridge carrying westbound traffic.


Photo Galleries and Videos: Van Buren Street Bridge

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