Structure 23600460202341 · Orleans County, LA

La0046 over Sister Street

Carries La0046 over Sister Street, 2.34 Mi South Of La 39.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck5/9 · Fair
Superstructure5/9 · Fair
Substructuresets the rating4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT52 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 4/9 · sets the rating

52 ft end to end, longest span 17 ft. Lengths and the car 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 slab bridge.

Built196066 years old
Length51.8 ft15.8 m
Daily traffic23,049counted 2021
Last inspectedJune 2023every 24 months

Location

StateLouisiana
CountyOrleans
Location2.34 Mi South Of La 39
CarriesLa0046
CrossesSister Street
Coordinates29.96359, -90.02650

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length51.8 ft (15.8 m)
Max Span17.1 ft (5.2 m)
Deck Width60.0 ft (18.3 m)
Deck Area289.1 sq m
Main Spans3
Year Built1960

Traffic

Avg Daily Traffic23,049 (2021)
Truck Traffic10%
Lanes On Bridge4
Lanes Under Bridge1

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerOther State Agencies
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number023600460202341

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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