Rating:
1 vote

Cobleigh Road Bridge

Jackson County, Oregon

Photos 

Cobleigh Road Bridge

East approach

Photo taken by Mike Goff in January 2008

Enlarge

BH Photo #232154

Map 

Street Views 

Facts 

Overview
Parker through truss bridge over Big Butte Creek on CR 949 (Cobleigh Road)
Location
Jackson County, Oregon
Status
Open to traffic
History
Built 1954
Design
Parker through truss
Dimensions
Length of largest span: 200.1 ft.
Total length: 303.2 ft.
Deck width: 14.1 ft.
Vertical clearance above deck: 18.0 ft.
Recognition
Eligible for the National Register of Historic Places
Approximate latitude, longitude
+42.58111, -122.60222   (decimal degrees)
42°34'52" N, 122°36'08" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/532641/4714376 (zone/easting/northing)
Quadrangle map:
Butte Falls
Average daily traffic (as of 2010)
256
Inventory numbers
ORNBI 29C237949 00201 (Oregon bridge number on the National Bridge Inventory)
BH 29987 (Bridgehunter.com ID)
Inspection report (as of July 2017)
Overall condition: Good
Superstructure condition rating: Good (7 out of 9)
Substructure condition rating: Good (7 out of 9)
Deck condition rating: Good (7 out of 9)
Sufficiency rating: 46.7 (out of 100)
View more at BridgeReports.com

Categories 

10-panel truss (157)
Built 1954 (357)
Built during 1950s (3,858)
Flared (403)
Functionally obsolete (6,368)
Have street view (27,060)
Jackson County, Oregon (40)
NR-eligible (4,056)
One-lane traffic (7,612)
Open (39,974)
 Oregon (1,181)
Owned by county (20,841)
Parker through truss (1,299)
Parker truss (1,683)
Riveted (2,183)
Span length 175-250 feet (1,991)
Steel grate deck (450)
Through truss (15,163)
Total length 250-500 feet (5,256)
Truss (32,941)

Update Log 

  • April 3, 2013: New Street View added by Mike Goff
  • May 14, 2012: New photos from Mike Goff
  • June 18, 2008: New photos from Michael Goff

Sources 

  • Mike Goff - michael [dot] goff [at] hotmail [dot] com
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Comments 

Cobleigh Road Bridge
Posted May 17, 2012, by Nathan Holth (form3 [at] historicbridges [dot] org)

14 feet seems a little narrow for a 1954 bridge too.

Cobleigh Road Bridge
Posted May 17, 2012, by Mike Goff (michael [dot] goff [at] hotmail [dot] com)

Rebecca,

I agree with you that this truss is a little light for a 1954 construction date. It is also different than any standard drawings I looked at for the era.

I am going to speculate that the truss was designed by the Bureau of Public Roads in the 1920's and was relocated from somewhere in Southern Oregon to Cobleigh Road.

I’ll continue looking into it and get back to you if I find anything.

MG

Cobleigh Road Bridge
Posted May 16, 2012, by Rebecca (rgburrow [at] gmail [dot] com)

Mike,

This bridge seems to be unique among the Oregon trusses... Do you have any thoughts about the construction date? 1954 seems too late to me, based on the lightweight structure and tiny gussets.