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LA0427 over DAWSON CR.BRG.(ACADIAN)

Map 

Coordinates:
+30.42336, -91.15136
30°25'24" N, 91°09'05" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

Name:LA0427 over DAWSON CR.BRG.(ACADIAN)
Structure number:611702580203371
Location:61172580203371
Purpose:Carries highway over waterway
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:20.0 ft. [6.1 m]
Total length:100.1 ft. [30.5 m]
Roadway width between curbs:63.0 ft. [19.2 m]
Deck width edge-to-edge:71.9 ft. [21.9 m]
Skew angle:10°
Owner:State Highway Agency [01]
Year built:1964
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:5
Main spans material:Concrete [1]
Main spans design:Slab [01]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: November 2014 

Status:Open, no restriction [A]
Average daily traffic:27,600 [as of 2014]
Truck traffic:6% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Bank is beginning to slump. River control devices and embankment protection have widespread minor damage. There is minor stream bed movement evident. Debris is restricting the channel slightly. [6]
Scour condition:Bridge is scour critical; bridge foundations determined to be unstable. [3]
Operating rating:53.5 tons [48.6 metric tons]
Inventory rating:31.7 tons [28.8 metric tons]
Sufficiency rating:87.9

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
November 201487.9Not deficientSatisfactorySatisfactorySatisfactory27600
December 201087.6Not deficientSatisfactorySatisfactoryGood30700
December 200887.6Not deficientGood-Good30200
November 200684.8Not deficientGoodVery GoodGood28300
November 200484.7Not deficientVery GoodVery GoodGood29500
November 200284.8Not deficientVery GoodVery GoodGood28300
November 200085.4Not deficientVery GoodVery GoodGood22136
November 199885.3Not deficientVery GoodVery GoodGood23869
November 199685.3Not deficientVery GoodVery GoodGood23869
November 199485.6Not deficientVery GoodVery GoodGood26032
November 199286.8Not deficientVery GoodVery GoodGood11911
November 199086.8Not deficientVery GoodVery GoodGood11911