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 2014 

Status:Open, no restriction [A]
Average daily traffic:76,500 [as of 2014]
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:76.2 tons [69.3 metric tons]
Inventory rating:45.5 tons [41.4 metric tons]
Sufficiency rating:83.2

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
April 201483.2Not deficientSatisfactorySatisfactoryGood76500
April 201284.0Not deficientSatisfactoryGoodGood68160
May 201083.5Not deficientSatisfactoryGoodVery Good73620
April 200882.8Not deficientSatisfactoryGoodGood70440
April 200683.6Not deficientSatisfactoryGoodGood63060
April 200483.6Not deficientSatisfactoryGoodGood62820
April 200283.8Not deficientSatisfactoryGoodVery Good60780
April 200084.7Not deficientSatisfactoryGoodVery Good52330
April 199885.7Not deficientSatisfactoryGoodVery Good52330
April 199685.3Not deficientSatisfactoryVery GoodVery Good55957
April 199486.6Not deficientSatisfactoryVery GoodVery Good54274
April 199287.1Not deficientSatisfactoryVery GoodVery Good47919