+38.55355, -90.26597
38°33'13" 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:16.4 ft. [5.0 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 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:103,702 [as of 2016]
Truck traffic:12% of total traffic
Deck condition:Fair [5 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Fair [5 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]
Sufficiency rating:72.7

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
August 2017FairFairFairFair10370272.7
August 2015FairFairFairSatisfactory10097572.9
September 2013FairFairFairSatisfactory10818272.5
September 2011FairFairFairSatisfactory4331575.6
September 2009FairSatisfactorySatisfactorySatisfactory4419588.2
August 2007FairSatisfactorySatisfactorySatisfactory7008686.9
August 2005FairGoodSatisfactorySatisfactory4789388.0
July 2003FairGoodGoodSatisfactory4746688.0
June 2001FairGoodGoodSatisfactory9342487.8
July 2000FairGoodGoodSatisfactory9633980.3
July 1999FairGoodGoodSatisfactory10207279.7
June 1998FairGoodGoodSatisfactory10207279.7
August 1997FairGoodGoodSatisfactory10207279.7
August 1996FairGoodGoodSatisfactory9600079.3
December 1995FairGoodGoodSatisfactory9600082.3
December 1993GoodGoodGoodVery Good9044981.7
December 1992GoodGoodGoodVery Good9044982.7
November 1991FairGoodSatisfactoryVery Good8730683.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Reinforced Concrete Columneach2161500
Reinforced Concrete Abutmentlinear ft.53046215530
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.5130424890
Reinforced Concrete Slabsq. ft.24,88115,3577,0352,4890
Wearing Surfacessq. ft.24,436021,4363,0000