I0012 over I-12 OVER US 61 AIRLINE


+30.42377, -91.07501
30°25'26" N, 91°04'30" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:I0012 over I-12 OVER US 61 AIRLINE
Structure number:611704540102782
Purpose:Carries highway overpass over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:54.1 ft. [16.5 m]
Total length:476.1 ft. [145.1 m]
Roadway width between curbs:65.0 ft. [19.8 m]
Deck width edge-to-edge:69.9 ft. [21.3 m]
Vertical clearance below bridge:15.4 ft. [4.7 m]
Owner:State Highway Agency [01]
Year built:1986
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:10
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: April 2016 

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:73,020 [as of 2015]
Truck traffic:19% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Equal to present minimum criteria [6]
Underclearances appraisal:Meets minimum tolerable limits to be left in place as is [4]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:76.8 tons [69.8 metric tons]
Inventory rating:45.9 tons [41.7 metric tons]
Sufficiency rating:83.5

Previous Inspections 

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
April 201683.5FairSatisfactorySatisfactoryGood-73020
April 201483.2FairSatisfactorySatisfactoryGood-76500
April 201284.0FairSatisfactoryGoodGood-68160
May 201083.5FairSatisfactoryGoodVery Good-73620
April 200882.8FairSatisfactoryGoodGood-70440
April 200683.6FairSatisfactoryGoodGood-63060
April 200483.6FairSatisfactoryGoodGood-62820
April 200283.8FairSatisfactoryGoodVery Good-60780
April 200084.7FairSatisfactoryGoodVery Good-52330
April 199885.7FairSatisfactoryGoodVery Good-52330
April 199685.3FairSatisfactoryVery GoodVery Good-55957
April 199486.6FairSatisfactoryVery GoodVery Good-54274
April 199287.1FairSatisfactoryVery GoodVery Good-47919