+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 

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. ratingEvaluationDeckSuper.Sub.ADT
August 201572.9Not deficientFairFairSatisfactory100975
September 201372.5Not deficientFairFairSatisfactory108182
September 201175.6Not deficientFairFairSatisfactory43315
September 200988.2Not deficientSatisfactorySatisfactorySatisfactory44195
August 200786.9Not deficientSatisfactorySatisfactorySatisfactory70086
August 200588.0Not deficientGoodSatisfactorySatisfactory47893
July 200388.0Not deficientGoodGoodSatisfactory47466
June 200187.8Not deficientGoodGoodSatisfactory93424
July 200080.3Not deficientGoodGoodSatisfactory96339
July 199979.7Not deficientGoodGoodSatisfactory102072
June 199879.7Not deficientGoodGoodSatisfactory102072
August 199779.7Not deficientGoodGoodSatisfactory102072
August 199679.3Not deficientGoodGoodSatisfactory96000
December 199582.3Not deficientGoodGoodSatisfactory96000
December 199381.7Not deficientGoodGoodVery Good90449
December 199282.7Not deficientGoodGoodVery Good90449
November 199183.0Not deficientGoodSatisfactoryVery Good87306