I 20 over CITY ST * 1ST AVE SO


+33.54555, -86.74254
33°32'44" N, 86°44'33" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I 20 over CITY ST * 1ST AVE SO
Structure number:011060
Old structure number:00000I20370004A (from 1992 edition)
Location:I 20 * 1ST AVE SO
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:110.2 ft. [33.6 m]
Total length:237.9 ft. [72.5 m]
Roadway width between curbs:39.4 ft. [12.0 m]
Deck width edge-to-edge:40.7 ft. [12.4 m]
Vertical clearance below bridge:16.4 ft. [5.0 m]
Skew angle:34°
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: July 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:30,680 [as of 2016]
Truck traffic:14% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Good [7 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:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:91.1 tons [82.8 metric tons]
Inventory rating:54.6 tons [49.6 metric tons]
Sufficiency rating:86.0
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$2,499,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
July 201686.0FairSatisfactoryFairGood-30680
July 201486.0FairSatisfactoryFairGood-30680
July 201286.0FairSatisfactoryFairGood-32780
July 201086.0FairSatisfactoryFairGood-31605
July 200886.0FairSatisfactoryFairGood-32130
August 200686.0FairSatisfactoryFairGood-31310
August 200486.0FairSatisfactoryFairGood-30790
August 200297.0FairSatisfactoryGoodGood-31140
August 200097.0FairSatisfactoryGoodGood-32125
August 199897.0FairSatisfactoryGoodGood-31265
August 199697.0GoodGoodGoodGood-30560
August 199497.0GoodGoodGoodGood-27540
September 199297.0GoodGoodVery GoodGood-27105
October 199097.0GoodGoodVery GoodVery Good-26490

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Steel Girder/Beamlinear ft.1,4281,428000
Steel Protective Coatingsq. ft.14,13700014,137
Reinforced Concrete Decksq. ft.9,75809,75800
Wearing Surfacessq. ft.9,758009,7580
Reinforced Concrete Columneach66000
Reinforced Concrete Abutmentlinear ft.152152000
Reinforced Concrete Pier Caplinear ft.108106200
Strip Seal Jointlinear ft.217217000
Movable Bearingeach1800180
Fixed Bearingeach1818000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.476476000