I 59/20 over 50 TH ST


+33.54582, -86.76140
33°32'45" N, 86°45'41" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I 59/20 over 50 TH ST
Structure number:011082
Location:I 59 * 50 TH ST
Purpose:Carries highway overpass over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:82.0 ft. [25.0 m]
Total length:152.9 ft. [46.6 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:14.4 ft. [4.4 m]
Skew angle:32°
Owner:State Highway Agency [01]
Year built:1974
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 [3]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: November 2015

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:70,200 [as of 2015]
Truck traffic:11% of total traffic
Deck condition:Good [7 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:Basically intolerable requiring high priority of corrrective action [3]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:62.9 tons [57.2 metric tons]
Inventory rating:40.7 tons [37.0 metric tons]
Sufficiency rating:81.6
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$3,011,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
November 201581.6FairGoodSatisfactoryGoodFO70200
November 201381.6FairSatisfactorySatisfactoryGoodFO70200
November 201169.4FairSatisfactoryFairGoodFO70545
November 200981.5FairSatisfactorySatisfactoryGoodFO71710
November 200781.5FairSatisfactorySatisfactoryGoodFO71565
November 200581.7FairSatisfactorySatisfactoryGoodFO69460
January 200481.9FairSatisfactorySatisfactoryGoodFO68040
February 200281.9FairSatisfactorySatisfactoryGoodFO68040
March 200081.9GoodGoodGoodGoodFO67530
March 199882.3GoodGoodVery GoodVery GoodFO63620
January 199683.9GoodGoodVery GoodVery GoodFO60820
March 199487.4GoodGoodVery GoodVery Good-57275
November 199189.5GoodVery GoodVery GoodVery Good-30785

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Steel Girder/Beamlinear ft.1,37601,304720
Steel Protective Coatingsq. ft.13,99300013,993
Reinforced Concrete Decksq. ft.11,46811,468000
Reinforced Concrete Columneach1010000
Reinforced Concrete Abutmentlinear ft.174001740
Reinforced Concrete Pier Caplinear ft.1361200160
Compression Jointlinear ft.300751160109
Movable Bearingeach27010143
Fixed Bearingeach2702700
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.306306000