Structure 84008404000501 · Rapides County, LA

La3100 over US 167

Carries La3100 over US 167, Int. La 3100 & US 167.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT365 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

365 ft end to end, longest span 91 ft: about 5 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.

Built196957 years old
Length365.2 ft111.3 m
Daily traffic2,714counted 2021
Last inspectedNovember 2024every 24 months

Location

StateLouisiana
CountyRapides
LocationInt. La 3100 & US 167
CarriesLa3100
CrossesUS 167
Coordinates31.34107, -92.41670

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length365.2 ft (111.3 m)
Max Span90.9 ft (27.7 m)
Deck Width33.1 ft (10.1 m)
Deck Area1124.1 sq m
Main Spans4
Year Built1969

Traffic

Avg Daily Traffic2,714 (2021)
Truck Traffic8%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number084008404000501

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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