I 59/20 over 50 TH ST


+33.54552, -86.76140
33°32'44" 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:011083
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:Fair [5 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
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:69.4
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 201569.4FairGoodFairSatisfactoryFO70200
November 201369.4FairSatisfactoryFairSatisfactoryFO70200
November 201169.4FairSatisfactoryFairSatisfactoryFO70545
November 200969.2FairSatisfactoryFairGoodFO71710
November 200769.2FairSatisfactoryFairGoodFO71565
November 200569.5FairSatisfactoryFairGoodFO69460
January 200469.7FairSatisfactoryFairGoodFO68040
February 200269.7FairSatisfactoryFairGoodFO68040
March 200069.7FairGoodFairGoodFO67530
March 199870.2FairGoodFairVery GoodFO63620
January 199672.0FairGoodFairVery GoodFO60820
March 199475.6FairGoodFairVery Good-57275
November 199189.5GoodGoodGoodGood-30785

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Steel Girder/Beamlinear ft.1,37601,1760200
Steel Protective Coatingsq. ft.13,9930013,9930
Reinforced Concrete Decksq. ft.10,77910,779000
Reinforced Concrete Columneach1010000
Reinforced Concrete Abutmentlinear ft.177017700
Reinforced Concrete Pier Caplinear ft.136013420
Compression Jointlinear ft.28201780104
Movable Bearingeach27011124
Fixed Bearingeach2702700
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.306306000