I 20 over I 55 TO I 20 WEST


+32.27722, -90.20983
32°16'38" N, 90°12'35" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:I 20 over I 55 TO I 20 WEST
Structure number:11000200250449B
Location:3.7 MI E SR 18
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:134.8 ft. [41.1 m]
Total length:979.1 ft. [298.4 m]
Roadway width between curbs:50.9 ft. [15.5 m]
Deck width edge-to-edge:54.1 ft. [16.5 m]
Vertical clearance below bridge:16.1 ft. [4.9 m]
Owner:State Highway Agency [01]
Year built:1966
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:12
Main spans material:Steel continuous [4]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: July 2016 

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:33,000 [as of 2014]
Truck traffic:13% 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:Superior to present desirable criteria [9]
Underclearances appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Roadway alignment appraisal:Better than present minimum criteria [7]
Scour condition:Bridge not over waterway. [N]
Operating rating:64.4 tons [58.5 metric tons]
Inventory rating:38.6 tons [35.1 metric tons]
Sufficiency rating:75.1
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$999,999,000

Previous Inspections 

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
July 201675.1FairFairFairVery Good-33000
August 201575.1FairFairFairVery Good-33000
August 201477.2FairFairFairVery Good-30000
July 201377.2FairFairFairVery Good-30000
August 201277.2FairFairFairVery Good-30000
July 201177.5FairFairFairVery Good-26000
November 201077.5FairFairFairVery Good-26000
September 200976.5FairFairFairFair-41500
July 200875.4FairFairFairFair-44500
August 200775.4FairFairFairFair-44500
September 200674.8FairFairSatisfactoryFair-54500
April 200589.6GoodGoodGoodVery Good-47500
November 200389.4GoodGoodGoodVery Good-51500
July 200290.0GoodGoodGoodVery Good-40000
July 200190.0GoodGoodGoodVery Good-40000
October 200089.0GoodGoodGoodVery Good-29500
August 199889.0GoodGoodGoodVery Good-29500
January 199788.9GoodGoodGoodVery Good-31000
February 199586.0GoodGoodGoodVery GoodFO35500
April 199186.4GoodGoodGoodVery GoodFO30500