I-59/20 over AL 79


+33.54791, -86.77997
33°32'52" N, 86°46'48" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:I-59/20 over AL 79
Structure number:010862
Location:I 59 * AL 79
Purpose:Carries highway overpass over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:89.9 ft. [27.4 m]
Total length:168.0 ft. [51.2 m]
Roadway width between curbs:67.9 ft. [20.7 m]
Deck width edge-to-edge:70.5 ft. [21.5 m]
Vertical clearance below bridge:17.1 ft. [5.2 m]
Skew angle:
Owner:State Highway Agency [01]
Year built:1973
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:2
Main spans material:Steel continuous [4]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Other [9]

Latest Available Inspection: February 2016 

Status:Open, no restriction [A]
Average daily traffic:76,895 [as of 2016]
Truck traffic:10% of total traffic
Deck condition:Satisfactory [6 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:Superior to present desirable criteria [9]
Underclearances appraisal:Meets minimum tolerable limits to be left in place as is [4]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:44.2 tons [40.2 metric tons]
Inventory rating:32.1 tons [29.2 metric tons]
Sufficiency rating:89.1
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$3,270,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
February 201689.1Not deficientSatisfactorySatisfactorySatisfactory76895
February 201477.1Not deficientGoodFairSatisfactory76895
February 201277.1Not deficientGoodFairSatisfactory76095
February 201077.1Not deficientGoodFairGood77355
February 200877.1Not deficientGoodFairGood77200
February 200678.1Not deficientGoodFairGood77910
March 200480.1Not deficientGoodFairGood77560
March 200282.0Not deficientGoodFairGood77560
March 200080.0Not deficientSatisfactoryFairGood67530
March 199880.0Not deficientGoodFairGood72875
January 199680.0Not deficientGoodFairGood72190
March 199479.0Not deficientGoodFairGood66100
November 199191.0Not deficientGoodSatisfactoryGood66155