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MICHIGAN AVE over MAIN BR CHICAGO RIV

Map

Coordinates:
+41.88931, -87.62425
41°53'22" N, 87°37'27" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:MICHIGAN AVE over MAIN BR CHICAGO RIV
Structure number:016603500000000
Old structure number:000016603527325 (from 1992 edition)
Location:365 N MCHIGAN AVE
Purpose:Carries highway over waterway
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:255.9 ft. [78.0 m]
Total length:390.1 ft. [118.9 m]
Roadway width between curbs:64.0 ft. [19.5 m]
Deck width edge-to-edge:91.9 ft. [28.0 m]
Vertical clearance above deck:13.5 ft. [4.1 m]
Vertical clearance below bridge:13.1 ft. [4.0 m]
Owner:City or Municipal Highway Agency [04]
Year built:1920
Historic significance:Bridge is on the National Register of Historic Places [1]
Design load:MS 18 / HS 20 [5]
Main span material:Steel [3]
Main span design:Movable - Bascule [16]
Deck type:Closed Grating [4]
Wearing surface:Other [9]

Latest Available Inspection: September 2017

Good/Fair/Poor Condition:Poor
Status:Open, no restriction [A]
Average daily traffic:39,700 [as of 2014]
Truck traffic:5% of total traffic
Deck condition:Fair [5 out of 9]
Superstructure condition:Poor [4 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Meets minimum tolerable limits to be left in place as is [4]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
Water adequacy appraisal:Superior to present desirable criteria [9]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:There are no noticeable or noteworthy deficiencies which affect the condition of the channel. [9]
Pier/abutment protection:In place but in a deteriorated condition [3]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:42.2
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$3,618,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
September 2017PoorFairPoorSatisfactory3970042.2
September 2015PoorSatisfactoryPoorSatisfactory3970043.5
October 2013FairSatisfactoryFairSatisfactory3970057.0
October 2011FairSatisfactoryFairSatisfactory3790060.2
October 2009FairSatisfactorySatisfactorySatisfactory3790071.6
October 2007FairSatisfactorySatisfactorySatisfactory3330071.9
November 2005FairSatisfactorySatisfactorySatisfactory3330071.9
October 2003FairSatisfactorySatisfactorySatisfactory4370071.3
November 2001FairSatisfactorySatisfactorySatisfactory3390971.9
August 1999FairSatisfactorySatisfactorySatisfactory3390071.9
August 1997FairSatisfactorySatisfactorySatisfactory3390071.9
September 1995FairGoodVery GoodSatisfactory3390070.6
March 1994GoodExcellentVery GoodVery Good3390070.6
January 1992PoorSeriousPoorSerious3390015.6
January 1990PoorSeriousPoorSerious3390015.6

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Girder/Beamlinear ft.804804000
Steel Stringerlinear ft.1,5961,225298730
Deck
Reinforced Concrete Decksq. ft.11,27410,89812620050
Superstructure
Steel Trusslinear ft.512270212300
Steel Floor Beamlinear ft.1,7501,0944252310
Steel Gusset Plateeach4484241572
Substructure
Steel Columneach1871100
Reinforced Concrete Pier Walllinear ft.165016500
Reinforced Concrete Pier Caplinear ft.349034900
Deck
Open Grid Decksq. ft.9,5659,565000
Concrete Filled Grid Decksq. ft.22,62820,36502,2630
Joints
Open Jointlinear ft.914914000