TR 121A over I-39/US 51


+40.95504, -89.05637
40°57'18" N, 89°03'23" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:TR 121A over I-39/US 51
Structure number:062005500000000
Old structure number:000062005525044 (from 1992 edition)
Location:5 MI S OF IL 17
Purpose:Carries highway over highway
Route classification:Local (Rural) [09]
Length of largest span:165.7 ft. [50.5 m]
Total length:228.0 ft. [69.5 m]
Roadway width between curbs:27.9 ft. [8.5 m]
Deck width edge-to-edge:31.2 ft. [9.5 m]
Vertical clearance below bridge:17.1 ft. [5.2 m]
Owner:State Highway Agency [01]
Year built:1990
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:75 [as of 2014]
Deck condition:Very Good [8 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Better than present minimum criteria [7]
Underclearances appraisal:Equal to present minimum criteria [6]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Scour condition:Bridge not over waterway. [N]
Operating rating:78.4 tons [71.3 metric tons]
Inventory rating:47.7 tons [43.4 metric tons]
Sufficiency rating:99.0

Previous Inspections 

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
March 201599.0FairVery GoodSatisfactorySatisfactory-75
March 2013100.0FairVery GoodGoodSatisfactory-75
March 2011100.0FairVery GoodGoodSatisfactory-125
March 2009100.0FairVery GoodGoodSatisfactory-125
March 2007100.0GoodVery GoodGoodGood-125
March 2005100.0GoodVery GoodVery GoodGood-125
March 2004100.0GoodVery GoodVery GoodGood-100
December 2001100.0GoodVery GoodVery GoodGood-100
March 2001100.0GoodVery GoodVery GoodGood-100
January 2000100.0GoodVery GoodVery GoodGood-100
2000100.0GoodVery GoodVery GoodGood-75
October 1998100.0GoodVery GoodVery GoodGood-75
November 1996100.0GoodVery GoodVery GoodGood-75
November 1994100.0GoodVery GoodVery GoodGood-75
November 1993100.0GoodVery GoodVery GoodGood-75
November 1992100.0GoodVery GoodVery GoodVery Good-50
October 1991100.0GoodVery GoodVery GoodVery Good-50