+38.55347, -90.26587
38°33'12" N, 90°15'57" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:IS 55 S over CST KOELN AVE
Structure number:866
Old structure number:A1075R 4 (from 1992 edition)
Location:S 18 T 44 N R 7 E
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:66.9 ft. [20.4 m]
Total length:170.9 ft. [52.1 m]
Roadway width between curbs:143.1 ft. [43.6 m]
Deck width edge-to-edge:145.7 ft. [44.4 m]
Vertical clearance below bridge:17.7 ft. [5.4 m]
Skew angle:47°
Owner:State Highway Agency [01]
Year built:1963
Year reconstructed:1986
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Number of main spans:3
Main spans material:Concrete continuous [2]
Main spans design:Slab [01]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Latex Concrete or similar additive [3]

Latest Available Inspection: August 2015

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:100,975 [as of 2015]
Truck traffic:12% of total traffic
Deck condition:Fair [5 out of 9]
Superstructure condition:Fair [5 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]
Underclearances appraisal:Meets minimum tolerable limits to be left in place as is [4]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:68.3 tons [62.1 metric tons]
Inventory rating:40.6 tons [36.9 metric tons]
Sufficiency rating:72.9

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
August 201572.9FairFairFairSatisfactory-100975
September 201372.5FairFairFairSatisfactory-108182
September 201175.6FairFairFairSatisfactory-43315
September 200988.2FairSatisfactorySatisfactorySatisfactory-44195
August 200786.9FairSatisfactorySatisfactorySatisfactory-70086
August 200588.0FairGoodSatisfactorySatisfactory-47893
July 200388.0FairGoodGoodSatisfactory-47466
June 200187.8FairGoodGoodSatisfactory-93424
July 200080.3FairGoodGoodSatisfactory-96339
July 199979.7FairGoodGoodSatisfactory-102072
June 199879.7FairGoodGoodSatisfactory-102072
August 199779.7FairGoodGoodSatisfactory-102072
August 199679.3FairGoodGoodSatisfactory-96000
December 199582.3FairGoodGoodSatisfactory-96000
December 199381.7GoodGoodGoodVery Good-90449
December 199282.7GoodGoodGoodVery Good-90449
November 199183.0FairGoodSatisfactoryVery Good-87306

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Reinforced Concrete Columneach2161500
Reinforced Concrete Abutmentlinear ft.53046215530
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.5130424890
Reinforced Concrete Slabsq. ft.24,88118,0115,0951,7750
Wearing Surfacessq. ft.24,436024,43600