Structure 70230273930241 · Allen County, LA

Martin Tram RD over Barnes Creek

Carries Martin Tram RD over Barnes Creek, 3.2 Mi SW Of Snookys RD.

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 overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT171 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

171 ft end to end, longest span 19 ft: about 2 semi-trucks nose to tail. 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 slab bridge.

Built198541 years old
Length170.9 ft52.1 m
Daily traffic414counted 2023
Last inspectedOctober 2023every 24 months

Location

StateLouisiana
CountyAllen
Location3.2 Mi SW Of Snookys RD
CarriesMartin Tram RD
CrossesBarnes Creek
Coordinates30.45452, -93.04268

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length170.9 ft (52.1 m)
Max Span19.0 ft (5.8 m)
Deck Width27.2 ft (8.3 m)
Deck Area432.4 sq m
Main Spans9
Year Built1985

Traffic

Avg Daily Traffic414 (2023)
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number070230273930241

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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