Structure 83500530308111 · Natchitoches County, LA

La0001 over Cane River

Carries La0001 over Cane River, .05 Mi. N Of S Int La495.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 3 of 9.

How ratings work
Deck4/9 · Poor
Superstructuresets the rating3/9 · Serious
Substructure5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT452 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9Superstructure 3/9 · sets the ratingSubstructure 5/9

452 ft end to end, longest span 50 ft: about 6 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 multi-beam bridge.

Built194878 years old
Length452.1 ft137.8 m
Daily traffic996counted 2021
Last inspectedMay 2024every 12 months

Location

StateLouisiana
CountyNatchitoches
Location.05 Mi. N Of S Int La495
CarriesLa0001
CrossesCane River
Coordinates31.53050, -92.88970

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length452.1 ft (137.8 m)
Max Span49.9 ft (15.2 m)
Deck Width35.4 ft (10.8 m)
Deck Area1488.2 sq m
Main Spans9
Year Built1948

Traffic

Avg Daily Traffic996 (2021)
Truck Traffic14%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number083500530308111

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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