Structure 611708173600651 · East Baton Rouge County, LA

Port Hudson Cem RD over Cooper Bayou

Carries Port Hudson Cem RD over Cooper Bayou, 0.7 Mi W Of US 61.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT120 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

120 ft end to end, longest span 20 ft. 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 slab bridge.

Built196858 years old
Length120.1 ft36.6 m
Daily traffic252counted 2023
Last inspectedJune 2023every 24 months

Location

StateLouisiana
CountyEast Baton Rouge
Location0.7 Mi W Of US 61
CarriesPort Hudson Cem RD
CrossesCooper Bayou
Coordinates30.65453, -91.26285

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length120.1 ft (36.6 m)
Max Span20.0 ft (6.1 m)
Deck Width33.5 ft (10.2 m)
Deck Area373.3 sq m
Main Spans6
Year Built1968

Traffic

Avg Daily Traffic252 (2023)
Truck Traffic13%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number611708173600651

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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