+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: December 2015 

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]
Evaluation:Structurally deficient [1]
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. ratingEvaluationDeckSuper.Sub.ADT
December 201547.0Structurally deficientFairFairPoor3200
December 201447.0Structurally deficientFairFairPoor3200
January 201447.0Structurally deficientFairSatisfactoryPoor3300
January 201275.0Not deficientGoodGoodSatisfactory3900
February 201164.0Not deficientGoodSatisfactoryFair3900
January 201064.0Not deficientGoodSatisfactoryFair4200
January 200964.0Not deficientGoodSatisfactoryFair4600
December 200763.0Not deficientSatisfactoryFairFair5200
December 200663.0Not deficientSatisfactoryFairFair5100
August 200563.0Not deficientSatisfactoryFairFair5100
June 200464.0Not deficientSatisfactoryFairFair4900
July 200362.0Not deficientFairFairFair5400
November 200062.0Not deficientFairFairFair5748
October 199874.0Not deficientSatisfactoryGoodSatisfactory5748
July 199675.0Not deficientVery GoodVery GoodVery Good3722
July 199475.0Not deficientVery GoodVery GoodVery Good3529
May 199274.0Not deficientVery GoodVery GoodVery Good5777