Structure 625230297900411 · St. Tammany County, LA

Magnolia Gardens over Creek

Carries Magnolia Gardens over Creek, 1mi.n.of Jct La 21 & La36.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT32 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

32 ft end to end, longest span 11 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 multi-beam bridge.

Built199630 years old
Length32.2 ft9.8 m
Daily traffic100counted 2016
Last inspectedJanuary 2025every 24 months

Location

StateLouisiana
CountySt. Tammany
Location1mi.n.of Jct La 21 & La36
CarriesMagnolia Gardens
CrossesCreek
Coordinates30.49688, -90.07226

Physical Characteristics

MaterialWood or Timber
DesignStringer/Multi-beam
Total Length32.2 ft (9.8 m)
Max Span11.2 ft (3.4 m)
Deck Width16.7 ft (5.1 m)
Deck Area50.0 sq m
Main Spans3
Year Built1996

Traffic

Avg Daily Traffic100 (2016)
Lanes On Bridge1

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number625230297900411

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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