CH 4 over I-39/US 51


+40.99877, -89.05639
40°59'56" N, 89°03'23" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:CH 4 over I-39/US 51
Structure number:062005300000000
Old structure number:000062005314821 (from 1992 edition)
Location:2.02 MI S 0F ILL 17
Purpose:Carries highway over highway
Route classification:Major Collector (Rural) [07]
Length of largest span:166.0 ft. [50.6 m]
Total length:229.0 ft. [69.8 m]
Roadway width between curbs:34.1 ft. [10.4 m]
Deck width edge-to-edge:37.1 ft. [11.3 m]
Owner:State Highway Agency [01]
Year built:1989
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: March 2015 

Status:Open, no restriction [A]
Average daily traffic:600 [as of 2014]
Truck traffic:5% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Equal to present minimum criteria [6]
Underclearances appraisal:Equal to present minimum criteria [6]
Roadway alignment appraisal:Better than present minimum criteria [7]
Scour condition:Bridge not over waterway. [N]
Operating rating:75.2 tons [68.4 metric tons]
Inventory rating:45.7 tons [41.5 metric tons]
Sufficiency rating:98.8

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
March 201598.8Not deficientSatisfactorySatisfactoryGood600
March 201399.8Not deficientGoodSatisfactoryGood600
March 201198.8Not deficientGoodSatisfactoryVery Good550
March 200998.8Not deficientGoodSatisfactoryVery Good750
March 200798.8Not deficientVery GoodGoodVery Good750
March 200598.8Not deficientVery GoodVery GoodVery Good750
March 200498.8Not deficientVery GoodVery GoodVery Good650
December 200198.8Not deficientVery GoodVery GoodVery Good650
March 200198.8Not deficientVery GoodVery GoodVery Good650
January 200098.8Not deficientVery GoodVery GoodVery Good650
200098.9Not deficientVery GoodVery GoodVery Good500
February 199998.9Not deficientVery GoodVery GoodVery Good500
September 199698.9Not deficientVery GoodVery GoodVery Good500
October 199498.8Not deficientVery GoodVery GoodVery Good500
November 199398.8Not deficientVery GoodVery GoodVery Good500
November 199298.8Not deficientVery GoodVery GoodVery Good500