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

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Reinforced Concrete Abutmentlinear ft.232232000
Prestressed Concrete Pileeach8484000
Reinforced Concrete Pier Caplinear ft.812081200
Pourable Jointlinear ft.1,04481202320
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.800800000
Reinforced Concrete Slabsq. ft.23,200023,20000