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 

Good/Fair/Poor Condition:Fair
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. RatingConditionDeckSuperstructureSubstructureSD/FOADT
March 201598.8FairSatisfactorySatisfactoryGood-600
March 201399.8FairGoodSatisfactoryGood-600
March 201198.8FairGoodSatisfactoryVery Good-550
March 200998.8FairGoodSatisfactoryVery Good-750
March 200798.8GoodVery GoodGoodVery Good-750
March 200598.8GoodVery GoodVery GoodVery Good-750
March 200498.8GoodVery GoodVery GoodVery Good-650
December 200198.8GoodVery GoodVery GoodVery Good-650
March 200198.8GoodVery GoodVery GoodVery Good-650
January 200098.8GoodVery GoodVery GoodVery Good-650
200098.9GoodVery GoodVery GoodVery Good-500
February 199998.9GoodVery GoodVery GoodVery Good-500
September 199698.9GoodVery GoodVery GoodVery Good-500
October 199498.8GoodVery GoodVery GoodVery Good-500
November 199398.8GoodVery GoodVery GoodVery Good-500
November 199298.8GoodVery GoodVery GoodVery Good-500