Structure 25529358904351 · Terrebonne County, LA

Roussell ST over Bayou Terrebonne

Carries Roussell ST over Bayou Terrebonne, 0.01 M W Of East Park.

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 overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT95 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 4/9 · sets the rating

95 ft end to end, longest span 19 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 slab bridge.

Built197947 years old
Length95.1 ft29 m
Daily traffic2,503counted 2022
Last inspectedApril 2023every 24 months

Location

StateLouisiana
CountyTerrebonne
Location0.01 M W Of East Park
CarriesRoussell ST
CrossesBayou Terrebonne
Coordinates29.59816, -90.72080

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length95.1 ft (29 m)
Max Span19.0 ft (5.8 m)
Deck Width35.4 ft (10.8 m)
Deck Area313.2 sq m
Main Spans5
Year Built1979

Traffic

Avg Daily Traffic2,503 (2022)
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number025529358904351

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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