MICHIGAN AVE over VARIOUS CITY STS

Map 

Facts 

Name:	MICHIGAN AVE over VARIOUS CITY STS
Structure number:	000016612026812
Location:	100 E & 365 TO 530 N
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]

2010 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	33,300 [as of 2006]
Truck traffic:	14% of total traffic
Deck condition:	Satisfactory [6 out of 9]
Superstructure condition:	Fair [5 out of 9]
Substructure condition:	Satisfactory [6 out of 9]
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]
Evaluation:	Functionally obsolete [2]
Sufficiency rating:	82.1

2000 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	33,900 [as of 1991]
Deck condition:	Satisfactory [6 out of 9]
Superstructure condition:	Fair [5 out of 9]
Substructure condition:	Satisfactory [6 out of 9]
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]
Evaluation:	Functionally obsolete [2]
Sufficiency rating:	82.0

1992 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	33,900 [as of 1991]
Deck condition:	Poor [4 out of 9]
Superstructure condition:	Serious [3 out of 9]
Substructure condition:	Serious [3 out of 9]
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]
Evaluation:	Structurally deficient [1]
Sufficiency rating:	41.5
Recommended work:	Widening of existing bridge with deck rehabilitation or replacement. [34]
Estimated cost of work:	$10,340,000

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