Structure 85831001925791 · Vernon County, LA

Boundary RD over Six Mile Creek

Carries Boundary RD over Six Mile Creek, 0.75 Miles East Of La 399.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck5/9 · Fair
Superstructure5/9 · Fair
Substructuresets the rating4/9 · Poor
Channelnot part of overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT133 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 4/9 · sets the rating

133 ft end to end, longest span 19 ft. 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 multi-beam bridge.

Built195076 years old
Length132.9 ft40.5 m
Daily traffic240counted 1976
Last inspectedJuly 2023every 12 months

Location

StateLouisiana
CountyVernon
Location0.75 Miles East Of La 399
CarriesBoundary RD
CrossesSix Mile Creek
Coordinates31.00253, -92.96610

Physical Characteristics

MaterialWood or Timber
DesignStringer/Multi-beam
Total Length132.9 ft (40.5 m)
Max Span19.0 ft (5.8 m)
Deck Width27.9 ft (8.5 m)
Deck Area344.2 sq m
Main Spans7
Year Built1950

Traffic

Avg Daily Traffic240 (1976)
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number085831001925791

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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