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I- 55 WB STEVENSON over WESTERN AVE VIADUCT

Map 

Coordinates:
+41.83568, -87.68459
41°50'08" N, 87°41'05" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

Name:I- 55 WB STEVENSON over WESTERN AVE VIADUCT
Structure number:016002600000000
Old structure number:000016002603701 (from 1992 edition)
Location:2.5 M SW DAN RYAN
Purpose:Carries highway over highway and railroad
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:117.8 ft. [35.9 m]
Total length:2134.9 ft. [650.7 m]
Roadway width between curbs:59.1 ft. [18.0 m]
Deck width edge-to-edge:62.3 ft. [19.0 m]
Vertical clearance below bridge:29.9 ft. [9.1 m]
Skew angle:21°
Owner:State Highway Agency [01]
Year built:1963
Year reconstructed:2000
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:Better than present minimum criteria [7]
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:77.0 tons [70.0 metric tons]
Inventory rating:46.3 tons [42.1 metric tons]
Evaluation:Functionally obsolete [2]
Sufficiency rating:89.0
Recommended work:Bridge deck rehabilitation with only incidental widening. [36]
Estimated cost of work:$9,801,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
October 201489.0Functionally obsoleteGoodVery GoodVery Good85050
November 201271.0Functionally obsoleteGoodVery GoodVery Good340000
January 201189.0Functionally obsoleteGoodVery GoodVery Good92300
February 200989.0Functionally obsoleteGoodVery GoodVery Good101250
February 200789.0Not deficientGoodVery GoodVery Good100300
May 200589.0Not deficientVery GoodVery GoodVery Good99950
June 200389.0Not deficientVery GoodVery GoodVery Good84950
July 200194.0Functionally obsoleteVery GoodVery GoodVery Good66850
November 200094.0Functionally obsoleteVery GoodExcellentVery Good58700
October 199964.0Structurally deficientPoorFairPoor74800
January 199964.0Structurally deficientPoorFairPoor72700
January 199864.0Structurally deficientPoorFairPoor72850
February 199764.0Structurally deficientPoorFairPoor70600
February 199579.0Structurally deficientPoorFairFair75000
September 199379.0Structurally deficientPoorFairFair67250
July 199163.0Structurally deficientPoorFairPoor69550