+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 2016 

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:52 [as of 2015]
Truck traffic:12% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Satisfactory [6 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. RatingConditionDeckSuperstructureSubstructureSD/FOADT
November 201679.2FairSatisfactoryGoodSatisfactory-52
November 201479.2FairSatisfactoryGoodGood-50
November 201278.2FairFairGoodGood-58
January 201278.2FairFairGoodGood-58
January 201055.3FairFairGoodGoodFO11000
January 200856.3FairFairGoodGoodFO11000
January 200655.3FairFairGoodGoodFO11000
January 200455.3FairFairGoodGoodFO11000
November 200156.3FairFairGoodGoodFO11000
January 200178.1FairFairGoodVery Good-425
January 200079.1FairSatisfactoryGoodVery Good-425
October 199879.1FairSatisfactoryGoodVery Good-425
December 199779.1FairSatisfactoryGoodVery Good-425
January 199780.2FairSatisfactoryGoodVery Good-250
January 199681.2FairSatisfactorySatisfactoryVery Good-250
December 199480.2FairSatisfactoryGoodVery Good-240
January 199480.2FairSatisfactoryGoodVery Good-240
February 199380.2GoodGoodGoodVery Good-240
December 199180.2GoodGoodGoodVery Good-240