Structure 625200000620269 · St. Tammany County, LA

W. 28th Ave. over Mile Branch

Carries W. 28th Ave. over Mile Branch, 1.0 Miles North Of North.

Overall conditionGood

Set by its lowest-rated component: Culvert at 7 of 9.

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
24 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 24 ft across. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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.

Built200719 years old
Length24.0 ft7.3 m
Daily traffic350counted 2011
Last inspectedJanuary 2024every 24 months

Location

StateLouisiana
CountySt. Tammany
Location1.0 Miles North Of North
CarriesW. 28th Ave.
CrossesMile Branch
Coordinates30.48666, -90.10526

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length24.0 ft (7.3 m)
Max Span24.0 ft (7.3 m)
Deck Width36.4 ft (11.1 m)
Deck Area81.0 sq m
Main Spans1
Year Built2007

Traffic

Avg Daily Traffic350 (2011)
Truck Traffic1%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number625200000620269

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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