I-39/US 51 SB over BNSF RR


+41.01076, -89.05620
41°00'39" N, 89°03'22" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:I-39/US 51 SB over BNSF RR
Structure number:062005100000000
Location:1.15 MI S OF ILL 17
Purpose:Carries highway over railroad
Route classification:Principal Arterial - Interstate (Rural) [01]
Length of largest span:63.0 ft. [19.2 m]
Total length:165.0 ft. [50.3 m]
Roadway width between curbs:40.0 ft. [12.2 m]
Deck width edge-to-edge:43.0 ft. [13.1 m]
Vertical clearance below bridge:23.0 ft. [7.0 m]
Skew angle:10°
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:Prestressed concrete continuous [6]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: March 2016 

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:8,250 [as of 2015]
Truck traffic:34% of total traffic
Deck condition:Fair [5 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Better than present minimum criteria [7]
Underclearances appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:75.6 tons [68.7 metric tons]
Inventory rating:42.5 tons [38.6 metric tons]
Sufficiency rating:85.1

Previous Inspections 

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
March 201685.1FairFairFairFair-8250
March 201567.8PoorFairFairPoorSD8350
March 201470.0PoorSatisfactorySatisfactoryPoorSD7500