Structure 23600463102222 · Orleans County, LA

La0039 over Japonica St.

Carries La0039 over Japonica St., 5.2 Mi W Of La 47.

Overall conditionFair

Set by its lowest-rated component: Deck at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT605 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

605 ft end to end, longest span 75 ft: about 1.7 football fields. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built195769 years old
Length605.0 ft184.4 m
Daily traffic36,993counted 2021
Last inspectedNovember 2023every 24 months

Location

StateLouisiana
CountyOrleans
Location5.2 Mi W Of La 47
CarriesLa0039
CrossesJaponica St.
Coordinates29.96927, -90.02736

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length605.0 ft (184.4 m)
Max Span75.1 ft (22.9 m)
Deck Width29.5 ft (9 m)
Deck Area1659.6 sq m
Main Spans9
Year Built1957

Traffic

Avg Daily Traffic36,993 (2021)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number023600463102222

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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