Structure 44132060931221 · Red River County, LA

Lawrence Road over Black Lake Bayou Trib.

Carries Lawrence Road over Black Lake Bayou Trib., 0.6 Mi. North Of La 155.

Overall conditionFair

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

How ratings work
Culvertsets the rating6/9 · Satisfactory
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT42 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 42 ft across with 3 openings. 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, so those are drawn as typical for a culvert.

Built198640 years old
Length42.0 ft12.8 m
Daily traffic59counted 2020
Last inspectedSeptember 2023every 24 months

Location

StateLouisiana
CountyRed River
Location0.6 Mi. North Of La 155
CarriesLawrence Road
CrossesBlack Lake Bayou Trib.
Coordinates32.10019, -93.20289

Physical Characteristics

MaterialSteel
DesignCulvert
Total Length42.0 ft (12.8 m)
Max Span12.1 ft (3.7 m)
Deck Width44.0 ft (13.4 m)
Deck Area171.5 sq m
Main Spans3
Year Built1986

Traffic

Avg Daily Traffic59 (2020)
Lanes On Bridge1

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical7 — Countermeasures installed
Structure Number044132060931221

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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