79TH ST over I- 94 RYAN & CTA


+41.75091, -87.62534
41°45'03" N, 87°37'31" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:79TH ST over I- 94 RYAN & CTA
Structure number:016114400000000
Old structure number:000016114426281 (from 1992 edition)
Location:2 M N US 12
Purpose:Carries highway overpass over highway and railroad
Route classification:Minor Arterial (Urban) [16]
Length of largest span:75.8 ft. [23.1 m]
Total length:192.9 ft. [58.8 m]
Roadway width between curbs:89.9 ft. [27.4 m]
Deck width edge-to-edge:107.0 ft. [32.6 m]
Vertical clearance below bridge:15.4 ft. [4.7 m]
Skew angle:
Owner:State Highway Agency [01]
Year built:1959
Year reconstructed:1999
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:3
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: September 2014 

Status:Open, no restriction [A]
Average daily traffic:12,800 [as of 2014]
Truck traffic:11% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Superior to present desirable criteria [9]
Underclearances appraisal:Basically intolerable requiring high priority of replacement [2]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:78.8 tons [71.6 metric tons]
Inventory rating:47.4 tons [43.1 metric tons]
Evaluation:Functionally obsolete [2]
Sufficiency rating:94.7
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$3,995,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
September 201494.7Functionally obsoleteGoodGoodGood12800
October 201276.0Functionally obsoleteGoodGoodGood17200
October 201094.1Functionally obsoleteGoodGoodGood17200
December 200894.0Functionally obsoleteGoodGoodVery Good20800
February 200694.0Not deficientGoodGoodVery Good20800
July 200294.0Not deficientVery GoodVery GoodVery Good20800
July 200094.0Not deficientVery GoodVery GoodVery Good19700
November 199894.0Not deficientExcellentExcellentVery Good19700
February 199745.4Structurally deficientPoorSatisfactorySerious21300
July 199543.9Structurally deficientPoorSatisfactorySerious21300
June 199443.9Structurally deficientPoorSatisfactorySerious21300
November 199344.2Structurally deficientPoorSatisfactorySerious19600
July 199244.2Structurally deficientPoorSatisfactorySerious19600
February 199179.1Structurally deficientPoorSatisfactoryFair19600