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Muddy Fork Sandy River Bridge

Clackamas County, Oregon

Photos 

Muddy Fork Sandy River Bridge

Low light photo

Photo taken by Mike Goff in December 2011

Enlarge

BH Photo #240689

Map 

Description 

The Muddy Fork Sandy River Bridge is significant due to the modern use of a truss span to replace a damaged reinforced concrete girder bridge.

Though the truss fabrication and construction techniques are modern, the use of a truss span on a highway bridge within Oregon is a rarity. Most structures of this type would have been replaced with a simple pre-stressed concrete slab structure with little or no esthetic value.

Facts 

Overview
Pratt pony truss bridge over Sandy River on USFS Road 1825
Location
Clackamas County, Oregon
Status
Open to traffic
History
Built 2011
Builder
- OBEC Consulting Engineers of Eugene, Oregon (Design Engineers)
Design
Modern welded Pratt pony truss
Dimensions
Span length: 170.0 ft.
Total length: 170.0 ft.
Approximate latitude, longitude
+45.38489, -121.87148   (decimal degrees)
45°23'06" N, 121°52'17" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/588347/5026327 (zone/easting/northing)
Quadrangle map:
Bull Run Lake
Inventory number
BH 53718 (Bridgehunter.com ID)

Categories 

Built 2011 (71)
Built during 2010s (439)
Clackamas County, Oregon (73)
Modern (2,459)
Modern Pratt pony truss (38)
Modern pony truss (100)
Modern truss (166)
OBEC Consulting Engineers (14)
 Open (40,016)
Oregon (1,185)
Owned by U.S. Forest Service (306)
Owned by federal government (1,235)
Span length 125-175 feet (4,243)
Total length 125-175 feet (5,948)
Welded (20)

Update Log 

  • November 20, 2014: New photos from Mike Garland
  • October 1, 2012: Added by Mike Goff

Sources 

  • Mike Goff - michael [dot] goff [at] hotmail [dot] com
  • OBEC Consulting Engineers - Project Page
  • Mike Garland - Rapier342 [at] comcast [dot] net

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