I0610 over ST. JOHN BAYOU


+29.99299, -90.08641
29°59'35" N, 90°05'11" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:I0610 over ST. JOHN BAYOU
Structure number:023604503402261
Location:2.7 MI EAST OF I-10
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:24.9 ft. [7.6 m]
Total length:200.1 ft. [61.0 m]
Roadway width between curbs:109.9 ft. [33.5 m]
Deck width edge-to-edge:117.1 ft. [35.7 m]
Skew angle:75°
Owner:State Highway Agency [01]
Year built:1973
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:8
Main spans material:Concrete [1]
Main spans design:Slab [01]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Other [9]

Latest Available Inspection: December 2015 

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:103,400 [as of 2015]
Truck traffic:6% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Superior to present desirable criteria [9]
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:77.2 tons [70.2 metric tons]
Inventory rating:46.5 tons [42.3 metric tons]
Sufficiency rating:85.0

Previous Inspections 

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
December 201585.0GoodGoodGoodGood-103400
December 201385.0GoodGoodGoodGood-98700
December 201188.0GoodGoodGoodGood-70900
December 200991.5FairSatisfactoryGoodGood-46300
November 200787.4FairSatisfactorySatisfactoryGood-75100
October 200586.6FairSatisfactorySatisfactoryGood-80900
June 200459.0FairSatisfactoryFairGood-85700
June 200359.0FairSatisfactoryFairGood-88200
August 200059.0FairSatisfactoryFairGood-75107
November 199768.2FairGoodSatisfactoryGood-75107
October 199470.0FairSatisfactorySatisfactoryGood-81241
July 199270.0FairSatisfactorySatisfactoryGood-85347
March 199070.0FairSatisfactorySatisfactoryGood-85347