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I- 55 EB ELEVATED over ASHLAND AVE VIADUCT

Map 

Coordinates:
+41.83819, -87.66576
41°50'17" N, 87°39'57" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

Name:I- 55 EB ELEVATED over ASHLAND AVE VIADUCT
Structure number:016108400000000
Old structure number:000016108426256 (from 1992 edition)
Location:2.6 M SW I-90,94
Purpose:Carries highway over highway and railroad
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:131.6 ft. [40.1 m]
Total length:2510.3 ft. [765.1 m]
Roadway width between curbs:62.0 ft. [18.9 m]
Deck width edge-to-edge:65.3 ft. [19.9 m]
Skew angle:15°
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 / HS 20 [5]
Number of main spans:31
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: August 2015 

Status:Open, no restriction [A]
Average daily traffic:65,350 [as of 2015]
Truck traffic:9% 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:Superior to present desirable criteria [9]
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:68.8 tons [62.5 metric tons]
Inventory rating:41.4 tons [37.6 metric tons]
Evaluation:Functionally obsolete [2]
Sufficiency rating:94.0
Recommended work:Widening of existing bridge with deck rehabilitation or replacement. [34]
Estimated cost of work:$10,356,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
August 201594.0Functionally obsoleteGoodVery GoodVery Good65350
August 201394.0Functionally obsoleteGoodVery GoodVery Good64850
August 201194.0Functionally obsoleteGoodVery GoodVery Good70900
September 200994.0Functionally obsoleteGoodVery GoodVery Good78400
October 200794.0Functionally obsoleteGoodVery GoodVery Good75250
October 200589.0Functionally obsoleteGoodVery GoodVery Good74000
September 200389.0Functionally obsoleteVery GoodVery GoodVery Good64850
December 200189.0Functionally obsoleteVery GoodVery GoodVery Good54050
November 199985.9Functionally obsoleteExcellentVery GoodVery Good58200
January 199952.9Structurally deficientSeriousFairPoor57350
January 199852.9Structurally deficientSeriousFairPoor56250
February 199752.9Structurally deficientSeriousFairPoor66900
February 199571.9Structurally deficientPoorFairFair68700
September 199371.9Structurally deficientPoorFairFair62200
July 199159.0Structurally deficientPoorPoorPoor61350