91ST ST over I- 94 RYAN & CTA


+41.72902, -87.62475
41°43'44" N, 87°37'29" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:91ST ST over I- 94 RYAN & CTA
Structure number:016114100000000
Old structure number:000016114126278 (from 1992 edition)
Location:0.5 M N US 12
Purpose:Carries highway over highway and railroad
Route classification:Local (Urban) [19]
Length of largest span:83.7 ft. [25.5 m]
Total length:213.9 ft. [65.2 m]
Roadway width between curbs:54.1 ft. [16.5 m]
Deck width edge-to-edge:71.2 ft. [21.7 m]
Vertical clearance below bridge:15.7 ft. [4.8 m]
Owner:State Highway Agency [01]
Year built:1958
Year reconstructed:2004
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 22.5 / HS 25 [9]
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: October 2014 

Status:Open, no restriction [A]
Average daily traffic:5,000 [as of 1997]
Truck traffic:3% of total traffic
Deck condition:Very Good [8 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:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:98.0 tons [89.1 metric tons]
Inventory rating:45.7 tons [41.5 metric tons]
Sufficiency rating:86.5
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$3,153,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
October 201486.5Not deficientVery GoodVery GoodVery Good5000
October 201286.5Not deficientVery GoodVery GoodVery Good5000
November 201086.7Not deficientVery GoodVery GoodVery Good5009
March 200986.7Not deficientVery GoodVery GoodVery Good5009
April 200777.9Functionally obsoleteExcellentExcellentVery Good5009
August 200547.7Structurally deficientPoorSatisfactoryPoor5009
December 200362.6Structurally deficientPoorSatisfactoryFair5009
February 200262.6Structurally deficientPoorSatisfactoryFair5009
February 200062.6Structurally deficientPoorSatisfactoryFair5009
200062.6Structurally deficientPoorSatisfactoryFair5009
September 199864.6Functionally obsoleteFairSatisfactoryFair5009
September 199692.0Functionally obsoleteSatisfactoryGoodSatisfactory-
June 199492.0Functionally obsoleteSatisfactoryGoodSatisfactory-
November 199392.0Functionally obsoleteSatisfactoryGoodSatisfactory-
July 199292.0Functionally obsoleteSatisfactoryGoodSatisfactory-
February 199192.0Functionally obsoleteSatisfactoryGoodSatisfactory-