+38.10100, -90.30359
38°06'04" N, 90°18'13" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:OR 55 S over ISLE DU BOIS CR
Structure number:1741
Old structure number:A2054 1 (from 1992 edition)
Location:S 2078 T 39 N R 7 E
Purpose:Carries highway over waterway
Route classification:Local (Rural) [09]
Length of largest span:54.1 ft. [16.5 m]
Total length:138.1 ft. [42.1 m]
Roadway width between curbs:27.9 ft. [8.5 m]
Deck width edge-to-edge:30.8 ft. [9.4 m]
Skew angle:25°
Owner:State Highway Agency [01]
Year built:1969
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:M 13.5 / H 15 [2]
Number of main spans:3
Main spans material:Steel continuous [4]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Other [9]

Latest Available Inspection: November 2014 

Status:Open, no restriction [A]
Average daily traffic:50 [as of 2014]
Truck traffic:12% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Better than present minimum criteria [7]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Better than present minimum criteria [7]
Channel protection:Bank is beginning to slump. River control devices and embankment protection have widespread minor damage. There is minor stream bed movement evident. Debris is restricting the channel slightly. [6]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Operating rating:33.7 tons [30.6 metric tons]
Inventory rating:19.8 tons [18.0 metric tons]
Sufficiency rating:79.2

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
November 201479.2Not deficientSatisfactoryGoodGood50
November 201278.2Not deficientFairGoodGood58
January 201278.2Not deficientFairGoodGood58
January 201055.3Functionally obsoleteFairGoodGood11000
January 200856.3Functionally obsoleteFairGoodGood11000
January 200655.3Functionally obsoleteFairGoodGood11000
January 200455.3Functionally obsoleteFairGoodGood11000
November 200156.3Functionally obsoleteFairGoodGood11000
January 200178.1Not deficientFairGoodVery Good425
January 200079.1Not deficientSatisfactoryGoodVery Good425
October 199879.1Not deficientSatisfactoryGoodVery Good425
December 199779.1Not deficientSatisfactoryGoodVery Good425
January 199780.2Not deficientSatisfactoryGoodVery Good250
January 199681.2Not deficientSatisfactorySatisfactoryVery Good250
December 199480.2Not deficientSatisfactoryGoodVery Good240
January 199480.2Not deficientSatisfactoryGoodVery Good240
February 199380.2Not deficientGoodGoodVery Good240
December 199180.2Not deficientGoodGoodVery Good240