+30.14164, -89.86381
30°08'30" N, 89°51'50" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US0011 over IRISH BAYOU
Structure number:023600180104831
Location:4.83 MI NORTH OF US 90
Purpose:Carries highway and pedestrian walkway over waterway
Route classification:Minor Arterial (Rural) [06]
Length of largest span:20.0 ft. [6.1 m]
Total length:339.9 ft. [103.6 m]
Roadway width between curbs:40.0 ft. [12.2 m]
Deck width edge-to-edge:42.7 ft. [13.0 m]
Owner:State Highway Agency [01]
Year built:1978
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 [1]
Main spans design:Slab [01]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: November 2016

Good/Fair/Poor Condition:Poor
Status:Open, no restriction [A]
Average daily traffic:3,200 [as of 2015]
Truck traffic:9% of total traffic
Deck condition:Fair [5 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Poor [4 out of 9]
Structural appraisal:Meets minimum tolerable limits to be left in place as is [4]
Deck geometry appraisal:Equal to present minimum criteria [6]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Banks are protected or well vegetated. River control devices such as spur dikes and embankment protection are not required or are in a stable condition. [8]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Operating rating:49.9 tons [45.4 metric tons]
Inventory rating:38.5 tons [35.0 metric tons]
Sufficiency rating:47.0
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$1,443,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
November 201647.0PoorFairFairPoorSD3200
December 201547.0PoorFairFairPoorSD3200
December 201447.0PoorFairFairPoorSD3200
January 201447.0PoorFairSatisfactoryPoorSD3300
January 201275.0FairGoodGoodSatisfactory-3900
February 201164.0FairGoodSatisfactoryFair-3900
January 201064.0FairGoodSatisfactoryFair-4200
January 200964.0FairGoodSatisfactoryFair-4600
December 200763.0FairSatisfactoryFairFair-5200
December 200663.0FairSatisfactoryFairFair-5100
August 200563.0FairSatisfactoryFairFair-5100
June 200464.0FairSatisfactoryFairFair-4900
July 200362.0FairFairFairFair-5400
November 200062.0FairFairFairFair-5748
October 199874.0FairSatisfactoryGoodSatisfactory-5748
July 199675.0GoodVery GoodVery GoodVery Good-3722
July 199475.0GoodVery GoodVery GoodVery Good-3529
May 199274.0GoodVery GoodVery GoodVery Good-5777

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Reinforced Concrete Abutmentlinear ft.9292000
Prestressed Concrete Pileeach6406400
Reinforced Concrete Pier Caplinear ft.6720657150
Pourable Jointlinear ft.75643132500
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.690690000
Reinforced Concrete Slabsq. ft.14,49014,490000