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MICHIGAN AVE over VARIOUS CITY STS

Map 

Coordinates:
+41.89174, -87.62415
41°53'30" N, 87°37'27" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

Name:MICHIGAN AVE over VARIOUS CITY STS
Structure number:016612000000000
Old structure number:000016612026812 (from 1992 edition)
Location:100E 365N TO 530N
Purpose:Carries highway over highway
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:41.0 ft. [12.5 m]
Total length:1110.9 ft. [338.6 m]
Roadway width between curbs:80.1 ft. [24.4 m]
Deck width edge-to-edge:141.1 ft. [43.0 m]
Vertical clearance below bridge:13.5 ft. [4.1 m]
Owner:City or Municipal Highway Agency [04]
Year built:1920
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:32
Main spans material:Steel [3]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Integral Concrete (separate non-modified layer of concrete added to structural deck) [2]

Latest Available Inspection: June 2016 

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:39,700 [as of 2014]
Truck traffic:5% of total traffic
Deck condition:Satisfactory [6 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:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Underclearances appraisal:Basically intolerable requiring high priority of corrrective action [3]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:48.5 tons [44.1 metric tons]
Inventory rating:35.6 tons [32.4 metric tons]
Sufficiency rating:79.4

Previous Inspections 

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
June 201679.4FairSatisfactoryFairFairFO39700
June 201479.4FairSatisfactoryFairFairFO39700
July 201279.6FairSatisfactoryFairSatisfactoryFO37900
July 201081.8FairSatisfactoryFairSatisfactoryFO37900
November 200782.1FairSatisfactoryFairSatisfactoryFO33300
November 200581.5FairSatisfactoryFairSatisfactoryFO43700
November 200381.5FairSatisfactoryFairSatisfactoryFO43700
November 200182.0FairSatisfactoryFairSatisfactoryFO33909
November 199982.0FairSatisfactoryFairSatisfactoryFO33900
July 199782.0FairSatisfactoryFairSatisfactoryFO33900
July 199580.9FairGoodFairSatisfactoryFO33900
July 199492.3FairGoodSatisfactorySatisfactoryFO33900
September 199219.3----SD33900
October 199141.5PoorPoorSeriousSeriousSD33900