Structure 23604190100811 · Orleans County, LA

La3021 over Southern Rr

Carries La3021 over Southern Rr, .3 Mi South Of I-610.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,212 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

1,212 ft end to end, longest span 68 ft: about 3.4 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 tee-beam bridge.

Built195076 years old
Length1211.9 ft369.4 m
Daily traffic47,747counted 2021
Last inspectedJanuary 2024every 24 months

Location

StateLouisiana
CountyOrleans
Location.3 Mi South Of I-610
CarriesLa3021
CrossesSouthern Rr
Coordinates29.98408, -90.05800

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length1211.9 ft (369.4 m)
Max Span67.9 ft (20.7 m)
Deck Width44.0 ft (13.4 m)
Deck Area4950.0 sq m
Main Spans22
Year Built1950

Traffic

Avg Daily Traffic47,747 (2021)
Truck Traffic10%
Lanes On Bridge3
Lanes Under Bridge7

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number023604190100811

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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