Share:

I 20 E TO I 55 N over OVER I 20 WB

Map

Coordinates:
+32.27624, -90.17591
32°16'34" N, 90°10'33" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I 20 E TO I 55 N over OVER I 20 WB
Structure number:110005506109310
Location:JCT I 55 & I 20
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:109.9 ft. [33.5 m]
Total length:1317.0 ft. [401.4 m]
Roadway width between curbs:40.0 ft. [12.2 m]
Deck width edge-to-edge:42.7 ft. [13.0 m]
Vertical clearance above deck:19.7 ft. [6.0 m]
Vertical clearance below bridge:17.1 ft. [5.2 m]
Owner:State Highway Agency [01]
Year built:1966
Year reconstructed:1998
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:17
Main spans material:Concrete continuous [2]
Main spans design:Box Beam or girders - Single or Spread [06]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: December 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:54,500 [as of 2014]
Truck traffic:21% of total traffic
Deck condition:Fair [5 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Very Good [8 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Better than present minimum criteria [7]
Underclearances appraisal:Equal to present minimum criteria [6]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:93.3 tons [84.8 metric tons]
Inventory rating:56.0 tons [50.9 metric tons]
Sufficiency rating:80.1

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
December 201680.1FairFairFairVery Good-54500
December 201484.9FairFairFairVery Good-21000
November 201284.8FairFairFairVery Good-22000
October 201084.8FairFairFairVery Good-22000
October 200895.5FairSatisfactoryGoodVery Good-54000
March 200795.6FairSatisfactoryGoodVery Good-50500
December 200495.6FairSatisfactoryGoodVery Good-51000
January 200395.9FairSatisfactoryGoodVery Good-44500
December 200097.0FairSatisfactoryGoodVery Good-20400
December 199897.0FairSatisfactoryGoodVery Good-20400
March 199792.0FairSatisfactoryGoodVery Good-20400
March 199592.0FairSatisfactoryGoodVery Good-18590
September 199192.0FairSatisfactoryGoodVery Good-16900
November 198992.0FairSatisfactoryGoodVery Good-15360

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Superstructure
Reinforced Concrete Closed Web/Box Girderlinear ft.1,3161,316000
Deck
Reinforced Concrete Top Flangesq. ft.52,63652,636000
Substructure
Reinforced Concrete Columneach5252000
Reinforced Concrete Abutmentlinear ft.159159000
Reinforced Concrete Pier Caplinear ft.624624000
Joints
Pourable Jointlinear ft.440440000
Bearings
Elastomeric Bearingeach8484000
Movable Bearingeach2424000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.2,6312,631000