Structure 625304529008548 · Tangipahoa County, LA

I0055 over Drain

Carries I0055 over Drain, Beginning Of Elevated HWY.

Overall conditionFair

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

How ratings work
Culvertsets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT34 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 34 ft across. 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, so those are drawn as typical for a culvert.

Built197848 years old
Length34.1 ft10.4 m
Daily traffic402counted 2021
Last inspectedJanuary 2025every 24 months

Location

StateLouisiana
CountyTangipahoa
LocationBeginning Of Elevated HWY
CarriesI0055
CrossesDrain
Coordinates30.40050, -90.43130

Physical Characteristics

MaterialSteel
DesignCulvert
Total Length34.1 ft (10.4 m)
Deck Width75.1 ft (22.9 m)
Deck Area238.2 sq m
Year Built1978

Traffic

Avg Daily Traffic402 (2021)
Truck Traffic25%
Lanes On Bridge1

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number625304529008548

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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