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I- 55 WB ELEVATED over S BR CHICAGO RIVER

Map 

Coordinates:
+41.83940, -87.66420
41°50'22" N, 87°39'51" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

Name:I- 55 WB ELEVATED over S BR CHICAGO RIVER
Structure number:016108500000000
Old structure number:000016108526257 (from 1992 edition)
Location:1.1 M SW I-94
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:106.3 ft. [32.4 m]
Total length:387.2 ft. [118.0 m]
Roadway width between curbs:72.8 ft. [22.2 m]
Deck width edge-to-edge:76.1 ft. [23.2 m]
Vertical clearance below bridge:30.8 ft. [9.4 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+Mod / HS 20+Mod [6]
Number of main spans:4
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:72,300 [as of 2015]
Truck traffic:8% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Very Good [8 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]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Banks are protected or well vegetated. River control devices such as spur dikes and embankment protection are not required or are in a stable condition. [8]
Pier/abutment protection:In place and functioning [2]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Operating rating:93.7 tons [85.2 metric tons]
Inventory rating:56.3 tons [51.2 metric tons]
Sufficiency rating:93.0
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$3,065,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
August 201593.0Not deficientGoodVery GoodGood72300
August 201393.0Not deficientGoodVery GoodGood71800
August 201193.0Not deficientGoodVery GoodGood84550
October 200993.0Not deficientGoodVery GoodGood85900
October 200793.0Not deficientGoodVery GoodGood81600
October 200593.0Not deficientGoodVery GoodGood80300
September 200393.0Not deficientVery GoodVery GoodGood75200
October 200193.0Not deficientVery GoodVery GoodGood67400
December 200093.0Not deficientVery GoodExcellentVery Good58700
February 199878.0Structurally deficientPoorSatisfactoryFair72200
April 199679.0Structurally deficientPoorSatisfactoryFair66900
February 199590.0Structurally deficientPoorSatisfactorySatisfactory68700
September 199390.0Structurally deficientPoorSatisfactorySatisfactory62200
October 199265.0Structurally deficientFairSatisfactoryPoor61350
July 199165.0Structurally deficientFairSatisfactoryPoor61350