Structure 80603000002301 · Natchitoches County, LA

Fdr 304 over Gin Branch

Carries Fdr 304 over Gin Branch, National Forest Road.

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 FT63 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

63 ft end to end, longest span 21 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 channel-beam bridge.

Built196759 years old
Length63.0 ft19.2 m
Daily traffic30counted 1976
Last inspectedJanuary 2023every 24 months

Location

StateLouisiana
CountyNatchitoches
LocationNational Forest Road
CarriesFdr 304
CrossesGin Branch
Coordinates31.50751, -93.22931

Physical Characteristics

MaterialPrestressed Concrete
DesignChannel Beam
Total Length63.0 ft (19.2 m)
Max Span21.0 ft (6.4 m)
Deck Width16.7 ft (5.1 m)
Deck Area97.9 sq m
Main Spans3
Year Built1967

Traffic

Avg Daily Traffic30 (1976)
Lanes On Bridge1

Inspection & Ownership

Last InspectionJanuary 2023
Inspection FrequencyEvery 24 months
OwnerU.S. Forest Service
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number080603000002301

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.

Nearby Bridges