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 

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. ratingEvaluationDeckSuper.Sub.ADT
March 201599.0Not deficientVery GoodSatisfactorySatisfactory75
March 2013100.0Not deficientVery GoodGoodSatisfactory75
March 2011100.0Not deficientVery GoodGoodSatisfactory125
March 2009100.0Not deficientVery GoodGoodSatisfactory125
March 2007100.0Not deficientVery GoodGoodGood125
March 2005100.0Not deficientVery GoodVery GoodGood125
March 2004100.0Not deficientVery GoodVery GoodGood100
December 2001100.0Not deficientVery GoodVery GoodGood100
March 2001100.0Not deficientVery GoodVery GoodGood100
January 2000100.0Not deficientVery GoodVery GoodGood100
2000100.0Not deficientVery GoodVery GoodGood75
October 1998100.0Not deficientVery GoodVery GoodGood75
November 1996100.0Not deficientVery GoodVery GoodGood75
November 1994100.0Not deficientVery GoodVery GoodGood75
November 1993100.0Not deficientVery GoodVery GoodGood75
November 1992100.0Not deficientVery GoodVery GoodVery Good50
October 1991100.0Not deficientVery GoodVery GoodVery Good50