+38.45228, -90.37695
38°27'08" N, 90°22'37" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:IS 55 N over MERAMEC RVR
Structure number:442
Location:S 403 T 43 N R 6 E
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:185.0 ft. [56.4 m]
Total length:1424.9 ft. [434.3 m]
Roadway width between curbs:73.8 ft. [22.5 m]
Deck width edge-to-edge:76.4 ft. [23.3 m]
Skew angle:30°
Owner:State Highway Agency [01]
Year built:1964
Year reconstructed:1993
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18+Mod / HS 20+Mod [6]
Number of main spans:5
Main spans material:Steel continuous [4]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: July 2014 

Status:Posted for load [P]
Average daily traffic:57,692 [as of 2014]
Truck traffic:18% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
Water adequacy appraisal:Equal to present minimum criteria [6]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Bank protection is in need of minor repairs. River control devices and embankment protection have a little minor damage. Banks and/or channel have minor amounts of drift. [7]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Operating rating:51.5 tons [46.8 metric tons]
Inventory rating:30.7 tons [27.9 metric tons]
Sufficiency rating:90.0

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
July 201490.0Not deficientGoodSatisfactoryGood57692
July 201291.1Not deficientGoodSatisfactoryGood54698
November 201091.4Not deficientGoodSatisfactoryGood51211
January 201091.4Not deficientGoodSatisfactoryGood51728
January 200891.4Not deficientGoodSatisfactoryGood53050
January 200691.6Not deficientSatisfactorySatisfactorySatisfactory48711
December 200493.6Not deficientSatisfactorySatisfactorySatisfactory48257
November 200291.6Not deficientSatisfactorySatisfactorySatisfactory47217
October 200191.6Not deficientGoodGoodGood47312