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UP - Lake Oswego Bridge

Photos 

Lake Oswego Railroad Bridge

Photo courtesy of Wikipedia

BH Photo #133829

Map 

History 

From Wikipedia, the free encyclopedia

The Lake Oswego Railroad Bridge (also known as the Union Pacific Railroad Bridge at Lake Oswego and formerly as the Southern Pacific Railroad Bridge at Lake Oswego) is a truss railroad bridge that spans the Willamette River between Lake Oswego, Oregon and Milwaukie, Oregon. Owned by the Union Pacific Railroad, it is currently used by the Portland and Western Railroad. The bridge was built in 1910 by the Southern Pacific Railroad, in response to the desires of Portland city planners for an eastside railway bypass to keep rail traffic out of downtown Portland. With its acquisition of Southern Pacific in 1996, Union Pacific Railroad assumed ownership of the bridge. Currently, the bridge is operated by the Portland and Western Railroad under a lease from Union Pacific. The entire bridge is 1,378 feet (420 m) in length. On the west (Lake Oswego) side, there is a 50-foot (15 m) deck plate girder approach span that was built in 1900 and moved to this location in 1931. In 1934, a 60-foot (18 m) open-deck trestle was built on this side of the river. Holding the railway deck across the river are two 298-foot (91 m) through truss spans. Completing the bridge on the east side in Milwaukie is a 668-foot (204 m) open-deck trestle. Though the bridge is now used exclusively for active freight rail transport, some Portland-area commuters have urged that the bridge be modified to allow commuter rail or bicycle traffic.

Facts 

Overview
Parker through truss bridge over Willamette River on Union Pacific Railroad in Lake Oswego
Location
Lake Oswego, Clackamas County, Oregon
Status
Open to traffic
History
The bridge was built in 1907 by the Southern Pacific Railroad, in response to the desires of Portland city planners for an eastside railway bypass to keep rail traffic out of downtown Portland.
Railroads
- Portland & Western Railroad (PNWR)
- Southern Pacific Railroad (SP)
- Union Pacific Railroad (UP)
Design
The entire bridge is 1,378 feet (420 m) in length. On the west (Lake Oswego) side, there is a 50-foot (15 m) deck plate girder approach span that was built in 1900 and moved to this location in 1931. In 1934, a 60-foot (18 m) open-deck trestle was built on this side of the river. Holding the railway deck across the river are two 298-foot (91 m) through truss spans. Completing the bridge on the east side in Milwaukie is a 668-foot (204 m) open-deck trestle.
Dimensions
Length of largest span: 298.0 ft.
Total length: 1,378.0 ft.
Also called
Union Pacific Railroad Bridge at Lake Oswego
Approximate latitude, longitude
+45.42510, -122.65470   (decimal degrees)
45°25'30" N, 122°39'17" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/527012/5030233 (zone/easting/northing)
Quadrangle map:
Lake Oswego
Inventory number
BH 39950 (Bridgehunter.com ID)

Update Log 

  • October 21, 2014: New photos from Royce and Bobette Haley
  • June 11, 2012: Updated by Luke Harden: Added category "Portland and Western Railroad"
  • November 5, 2009: New photos from Michael Goff
  • February 21, 2009: New photo from Quinn Phelan
  • February 20, 2009: Essay added by Quinn Phelan

Related Bridges 

Sources 

  • Quinn Phelan - qphelan [at] earthlink [dot] net
  • Mike Goff - michael [dot] goff [at] hotmail [dot] com
  • Wikipedia - Lake Oswego Railroad Bridge
  • The Portland Bridge Book - Sharon Wood Wortman, Oregon Historical Society Press, 2001
  • Royce and Bobette Haley - roycehaley111 [at] yahoo [dot] com

Comments 

UP - Lake Oswego Bridge
Posted December 8, 2014, by Scott Gavin (trainnut1956 [at] gmail [dot] com)

Please note that in several pictures, the date plate on the bridge reads "1907" not 1910.