I-20 over I-285- I-285 RAMP


+33.76519, -84.49387
33°45'55" N, 84°29'38" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I-20 over I-285- I-285 RAMP
Structure number:000000012101670
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:97.1 ft. [29.6 m]
Total length:557.1 ft. [169.8 m]
Roadway width between curbs:117.5 ft. [35.8 m]
Deck width edge-to-edge:120.7 ft. [36.8 m]
Vertical clearance below bridge:17.7 ft. [5.4 m]
Skew angle:30°
Owner:State Highway Agency [01]
Year built:1965
Year reconstructed:1979
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18+Mod / HS 20+Mod [6]
Number of main spans:8
Main spans material:Steel [3]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: June 2015

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:146,330 [as of 2012]
Truck traffic:1% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 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:Superior to present desirable criteria [9]
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:43.6 tons [39.6 metric tons]
Inventory rating:25.7 tons [23.4 metric tons]
Sufficiency rating:79.2
Estimated cost of work:$6,826,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
June 201579.2GoodGoodGoodGoodFO146330
July 201379.2GoodGoodGoodGoodFO146330
July 201179.2GoodGoodGoodGoodFO180900
September 200979.2GoodGoodGoodGoodFO180900
July 200779.2GoodGoodGoodGoodFO160640
August 200579.2GoodGoodGoodGoodFO164570
August 200383.2GoodGoodGoodGood-160500
September 200183.2GoodGoodGoodGood-123700
July 199982.2GoodGoodGoodGood-123700
October 199692.0GoodGoodVery GoodGood-123700
September 199490.0GoodGoodVery GoodGood-123700
August 199290.0GoodGoodGoodGood-110657
August 199097.0GoodGoodGoodGood-110657

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Steel Girder/Beamlinear ft.11,30111,301000
Steel Protective Coatingsq. ft.92,69692,37631703
Reinforced Concrete Decksq. ft.67,33467,334000
Wearing Surfacessq. ft.65,551065,55100
Reinforced Concrete Columneach5656000
Reinforced Concrete Abutmentlinear ft.242240020
Reinforced Concrete Pier Caplinear ft.847841330
Pourable Jointlinear ft.968000968
Movable Bearingeach160160000
Steel Protective Coatingsq. ft.160016000
Fixed Bearingeach160160000
Steel Protective Coatingsq. ft.160016000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.1,1141,114000