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I- 55 EB STEVENSON over WESTERN AVE VIADUCT

Map 

Coordinates:
+41.83536, -87.68456
41°50'07" N, 87°41'04" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

Name:I- 55 EB STEVENSON over WESTERN AVE VIADUCT
Structure number:016105800000000
Old structure number:000016105826248 (from 1992 edition)
Location:2.5 M SW DAN RYAN
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:117.5 ft. [35.8 m]
Total length:2134.9 ft. [650.7 m]
Roadway width between curbs:68.9 ft. [21.0 m]
Deck width edge-to-edge:72.2 ft. [22.0 m]
Skew angle:21°
Owner:State Highway Agency [01]
Year built:1963
Year reconstructed:1999
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:27
Main spans material:Steel continuous [4]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: October 2014 

Status:Open, no restriction [A]
Average daily traffic:85,050 [as of 2014]
Truck traffic:7% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Very Good [8 out of 9]
Substructure condition:Very Good [8 out of 9]
Structural appraisal:Equal to present desirable criteria [8]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
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:79.5 tons [72.3 metric tons]
Inventory rating:47.7 tons [43.4 metric tons]
Evaluation:Functionally obsolete [2]
Sufficiency rating:87.0
Recommended work:Widening of existing bridge with deck rehabilitation or replacement. [34]
Estimated cost of work:$13,679,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
October 201487.0Functionally obsoleteGoodVery GoodVery Good85050
November 201269.0Functionally obsoleteGoodVery GoodVery Good340000
January 201187.0Functionally obsoleteGoodVery GoodVery Good92300
February 200987.0Functionally obsoleteGoodVery GoodVery Good101250
February 200787.0Not deficientGoodVery GoodVery Good100300
May 200587.0Not deficientGoodVery GoodVery Good99950
June 200387.0Not deficientVery GoodVery GoodVery Good84950
July 200189.0Functionally obsoleteVery GoodVery GoodVery Good66850
November 199988.2Functionally obsoleteExcellentVery GoodVery Good74800
January 199956.2Structurally deficientPoorFairPoor72700
January 199856.2Structurally deficientPoorFairPoor72850
February 199757.2Structurally deficientPoorFairPoor70600
February 199574.2Structurally deficientPoorFairFair75000
September 199374.2Structurally deficientPoorFairFair67250
July 199158.2Structurally deficientPoorFairPoor69550